Earned ASP.NET Core developer certificates working in both WSL and Windows (2023)

I recently reinstalled my development machine for various reasons and as part of that I decided to use Visual Studio Code and thatRemote - WSLExtension to do my development on Linux for a while.

Warning:For some reason the code in this post no longer works. It did while I was writing the post, but when I tried to use it recently it failed. I'm not sure if there were some changes in .NET 5 or something. But it doesn't work for me. Because of this, I would recommend reading my updated post on the subject. It is available at"Setting up ASP.NET Core developer certificates for WSL and Windows"!

Why? Well, it has some advantages... And also... Because!

I could probably get on with it in the Windows world without too much trouble, and I probably will for some stuff. But having worked with Windows all my life and supporting .NET Core Linux, I thought it was time to broaden my horizons a bit. I find that the challenge of trying new things pushes me not only to give me a better understanding of things, but also to open my eyes to new ways of doing things. Maybe Windows isn't the best solution for everything...

However, I quickly encountered a few problems. Certificate issues to be more specific…

Developer certificates on WSL

If you want to build an ASP.NET Core application and use HTTPS, you "need" a self-signed development certificate. This is pretty easy to set up with thedotnet dev-certsTool. And to be honest, when I set up my new application in WSL, I didn't even have to do that. It just magically worked. Kestrel somehow managed to find an SSL certificate in Linux and used that for my application. However, this certificate is not trusted by Windows (or Linux), so my browser gave a warning when I navigated to this web app.

This is pretty easy to fix by simply having Windows trust the SSL certificate. And it's covered in a number of other blog posts and SO questions around the interwebs. However, this doesn't solve some other problems that surfaced half an hour later...

Dev Certificate Trust WSL

My real problems started when I decided to create two applications that needed to communicate with each other over TLS/SSL... I needed to create an IdP with Identity Server and have a web application trust it.

Boot up the IdP withrun dotnetin WSL worked fine and I was able to access it from Windows without any problems. However, when I launched my second application within the WSL, which relied on the IdP, I faced this

...---> System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid due to errors in the certificate Chain: UntrustedRoot at System.Net.Security.SslStream.SendAuthResetSignal(ProtocolToken message, ExceptionDispatchInfo exception) ...

The reason for this is actually quite simple... The SSL certificate that is used by default for the ASP.NET applications is not trusted by the system, even if it is a self-signed certificate from the local computer. So when the relying party web application tries to communicate with the IdP, it gets an SSL certificate that it doesn't trust. And so it fails.

There are a couple of ways to resolve this. The easiest and probably least recommended method is to ignore the certificate issue by adding something like this

...#if DEBUGwar Handler = Neu HttpClientHandler();Handler.ServerCertificateCustomValidationCallback = (message, zert, Chain, Mistake) => { return true; };#endif...#if DEBUGoptions.BackchannelHttpHandler = Handler;#endif...

This will add an http handler that completely ignores certificate validation, which is obviously not a good idea. Even if this code is only used during debug builds.

Sure it works, but it's a poor solution that requires code changes for each project. And if for some reason you release a debug build to the world, a lot of your security just went out the window...

The better solution would be to trust the certificate.

Trust dev certificates on Linux (Ubuntu).

There doesn't seem to be a standard way to trust certificates on Linux, but on Ubuntu you can trust a certificate by including the public key/usr/local/share/ca-certificatesand then callsudo update-ca certificates. However… this doesn't quite work with the certificates generated by thedotnet dev-certsTool.

Why? Well, there seems to be a bug in OpenSSL that is causing some problems. It has to do with Linux requiring some X509v3 attributes that Windows doesn't have and so on. It's a very technical topic, to be honest, and a bit boring... But if you're interested, you can read more about it at https://github.com/dotnet/aspnetcore/issues/7246.

Instead, we need to manually generate a certificate and use that instead. This is also covered in a few places on the web, but I'd like to expand on it a little. I want to make sure I can use the same certificate in both Windows and WSL. For two reasons. Firstly because it should be possible... And secondly if you use separate certs you can't mix applications in WSL and Windows because the WSL certs wouldn't trust Windows' cert unless you have that cert Added Confidence as Good. And it would be much nicer to have a single trusted certificate used in both environments.

(Video) Custom HTTPS Dev Environment using .NET Core, Kestrel & certificates

This got me down a bit of a rabbit hole that took me some time to figure out. Being not the best at OpenSSL and being fairly new to Linux and not knowing what .NET Core considers a valid developer certificate, things were a bit more complicated than I honestly expected. But that's what I came up with.

Creating an X509 certificate

The first thing we need to do is create a new X509 certificate. A task I was hoping I could do with PowerShell andNew self-signed certificate. But that didn't work... Why? For .NET Core to recognize a certificate as a developer certificate, it must contain a specific X509 extension, which I couldn't add using the PowerShell command. Instead I had to use OpenSSL in WSL to create it.

The first thing I needed to create a new certificate was a configuration file that defined the certificate requirements. So I created a file namedlocalhost.confin my home directory and added the following

[req]distinguished_name = req_distinguished_namereq_extensions = req_extx509_extensions = v3_ca[req_distinguished_name]commonName = Allgemeiner Name (z. B. Server-FQDN oder IHR Name)commonName_default = localhostcommonName_max = 64[req_ext]subjectAltName = @alt_names1. UTF8String:Something[v3_ca]subjectAltName = @alt_namesbasicConstraints = kritisch, CA:falsekeyUsage = keyCertSign, cRLSign, digitalSignature,keyEncipherment[alt_names]DNS.1 = localhostDNS.2 =

This creates a new certificate with a 2048-bit key, including the necessary key usages.

Note:Linux apparently requires self-signed certificates to be both a certificate and a CA, so it needs to be assigned the use of certificate signing.

In addition to the correct key usages, it adds a custom extension with the id1. This is used by ASP.NET Core to verify that it really is a valid developer certificate. It was also what PowerShell couldn't add for me...

Once the configuration is in place, it can be used to create a public/private key pair with the following command

openssl-Anf-x509 -Node -Take365-new keyrsa:2048-key off~/localhost.key-out~/localhost.crt-config~/localhost.conf

Note:Just press Enter when promptedcommon namesas it is by defaultpremises Hostwhat you want

Just to check if the public key is not already trusted we can run it

>verify openssl ~/localhost.crtCN=localhosterror 18 at 0-deep-first-search: self-signed certificate error /home/zerokoll/localhost.crt: verification failed

The next step is to ensure that Ubuntu trusts the certificate. To do this, the public key must be copied/usr/local/share/ca-certificatesand then trusted by running as a certificate authorityupdate-ca certificates. Like this

sudo cp ~/localhost.crt /usr/local/share/ca-certificatessudo update-ca-certificates

Now we can try again to verify that the certificate is trusted by running itverify openssl

Verify openssl ~/localhost.crt/home/zerokoll/localhost.crt: OK

Ok, now the Linux part trusts the certificate. The next step is to get Windows to do the same.

Windows requires a PFX version of the certificate that contains both the private and public keys. The reason both are needed is because not only do we trust it, but we will be using it as our SSL certificate on this site. So the first step is to create a PFX from the public/private key pair. Like this

(Video) Building modern high performance services with ASP.NET Core and .NET 7

openssl pkcs12-Export -out~/localhost.pfx- Ink~/localhost.key-in~/localhost.crt

This will ask you for a password and you should make sure you add a strong password as it could be dangerous if someone nefarious gets their hands on it. Remember, it's a CA certificate and you trust it. So if someone got their hands on it and used it to generate a new certificate, you would automatically trust that certificate...

Next, the PFX needs to be moved to Windows. Actually, it could stay in Linux as well, but moving it to Windows makes it easy to use from Windows and copy to other Linux distributions if needed.

Moving the file to Windows looks like this

mkdir -p/c/Benutzer/<BENUTZERNAME>/.aspnet/.sslmv~/localhost.pfx /c/Users/<BENUTZERNAME>/.aspnet/https

Where [USERNAME] is the name of your Windows user.

Note:I mount my Windows drives in the root of my WSL. If not, you need to change the path/mnt/c/Users/<BENUTZERNAME>/.aspnet/https

Once this is done the public/private keys etc can be deleted as they are no longer needed

rm -rf./localhost.*

The final step in setting up mutual trust is to import the newly created certificate as a dev-cert and trust itdotnet dev-certs. I used PowerShell to do it like this

dotnet dev-certs https--to clean --import (join path$env:user profile".aspnet/https/localhost.pfx") -p<PASSWORT> dotnet dev-certs https--to trust

That's it! Both systems should now use and trust the same certificate.

On the Windows side, Kestrel should fetch the certificate automatically since it is available in the person store of the current user certificate.

Unfortunately, the WSL side of things isn't quite as nice... Some configuration needs to be done to ensure the correct certificate is used by default.

Configure Kestrel in WSL to use the correct SSL certificate

Kestrel can be configured to use an X509 certificate by using theASPNETCORE_Kestrel:certificates:default:pathandASPNETCORE_Kestrel:Certificates:Default:Passwordconfiguration values. This can be done in several ways.

One way would be to set up the configuration in the appSettings or user secrets. But it would be required for every project you've worked on, which feels tedious and annoying.

Another option is to set up environment variables that define these values. This would be automatically taken as the default by any application running in WSL.

(Video) Show a user's emails in an ASP.NET Core app using Microsoft Graph

In my case I usee.glike my shell, so I opened up~/.zshrcand added

export ASPNETCORE_Kestrel__Certificates__Default__Password="<KENNWORT>"export ASPNETCORE_Kestrel__Certificates__Default__Path="/c/Users/<USERNAME>/.aspnet/https/localhost.pfx"

Note:If you set configuration values ​​as environment variables, you must replace:with a double underscore.

This ensures that these environment variables are set up whenever this shell is used.

I then reloaded the variables by runningQuelle ~/.zshrc.

Comment:For example, if you use bash, you can add it~/.profileinstead of this.

It should be! Well... I...

Attention... IIS Express

There's a problem with this solution... Unfortunately, IIS Express doesn't play well. The previous solution will set it up for Kestrel to find the new certificate, but IIS Express still wants to use its own self-signed certificate. So if you want to use IIS Express for your development, you need to tell it to use your certificate.

Note:It's not really IIS Express. It's actually HTTP.SYS that binds the ports and certificates etc. And then IIS Express sits on top of it...

By default, IIS Express (or maybe Visual Studio, not sure) seems to bind ports 44300 through 44399 to its own self-signed certificate. This causes some problems if you want

to use your own certificate. Or if you delete the IIS Express self-signed certificate. Don't ask me how I know that...

You can view the current SSL port bindings by running

netsh http shows sslcert

And if you look through this list, you'll probably notice that all of the previously mentioned ports are preemptively bound to the same IIS Express developer certificate, even though they're not actually in use yet.

So if you want to use your own certificate for one of these ports instead, you have to do two things.

First you need to add your own self-signed certificate to the local computer certificate store in the Personal > Certificates folder. Or run the following commands in an elevated PowerShell terminal

$ mypwd =Get-Credential-Username 'Enter password below' -News 'Enter password below'Import pfx certificate-File path<PATH_TO_PFX>-CertStoreLocationCertificate:\LocalMachine\Mj-Password $ mypwd.Password

Next, you need to bind your new certificate to the port in question. This isn't that hard as long as you have the thumbprint of the certificate. Something you can easily get from the Certificates MMC snap-in, or by running a PowerShell command that looks something like this

Write-Host(Get-ChildItem-AwayCertificate:\LocalMachine\My | where object{$_.Theme-to suit "CN=premises Host"}).thumbprint
(Video) Learn C# with CSharpFritz - Hosting ASP.NET Core MVC with Linux

Tip:If you get more than one thumbprint, chances are you have both your own self-signed certificate and one from IIS Express in it.

Once you have the fingerprint, you'll need to bind the port you want to use with itNet. It looks like this

netsh http update sslcert ipport=<PORT> appid='{<APPID>}' certhash=<CERT_HASH>

From wherePORTis the port you want to use,APPIDis any GUID you want andCERT_HASHis the fingerprint you just retrieved.

Another option is to useIisExpressAdminCmd.exeto get the job done. This is a little nicer since it doesn't care about GUIDs. All you have to do is navigateC:\Programme (x86)\IIS Expressand runIisExpressAdminCmd.exe. Like this

CD "C:\PProgram files (x86)\IIS-Express".\IisExpressAdminCmd.exe setupsslUrl-URL:https://localhost:<PORT>/-CertHash:<THUMBPRINT>

From whereTHUMBPRINTis the fingerprint for your certificate andPORTis the port used for your application.

Both options end up with exactly the same result. And you can check if the result is what you want by running it

netsh http shows sslcertexport=<PORT>

This should show you that the certificate you are trying to use is now bound to this port.

Unfortunately this has to be done for any applications you want to run through IIS Express, which is a bit of a hassle.

So if you want to make sure you get the same experience as you normally would, ie. H. that you boot up visual studio, start a new project, press F5 and the certificate just works, you can run the following.

For($i=0; $i - Die99; $i++) {.\IisExpressAdminCmd.exe setupsslUrl-URL:"https://localhost:443$($i.ToString().PadLinks(2,"0"))/" -CertHash:<THUMBPRINT>}

This loops through all the pre-bound ports (44300 -> 44399) and rebinds them all to your own certificate. This should make everything "just work" so you can transparently use your new self-signed certificate in IIS Express.

Note:Personally, I prefer to run the application from the terminal window instead, as it allows me to easily view the log output. Despite this, IIS Express is still a very valid option!


Running applications in WSL should now default to our custom certificate for SSL. So should any application using either Kestrel or IIS Express in Windows. Additionally, the certificate should be trusted by both WSL/Linux and Windows, enabling trusted server-to-server communication between applications running on WSL and between apps running on WSL and Windows. And since Windows trusts the certificate, it should also allow you to navigate to your HTTPS-enabled applications and establish an approved, secure connection to applications running on both WSL and Windows.

It was a bit of a hassle to figure this out, but now that it's up and running it should be done and dusted and I shouldn't have to worry about it anymore!

(Video) Learn ASP.NET Core 3.1 - Full Course for Beginners [Tutorial]

If you have any comments or questions, please contact@ZeroKoll!


How do I add a certificate to WSL? ›

  1. Type certmgr. ...
  2. In the window, find out the certificate of the proxy:
  3. Double click the certificate row and go to Details tab:
  4. Click button Copy to File.
  5. Click Next button:
  6. Select Base-64 encoded X.509 (.CER)
  7. Choose the path and finish the export. ...
  8. Copy this certification file into your WSL distro.
Jun 20, 2022

How to trust asp net core SSL certificate? ›

To trust the certificate, use the --trust option. To create a file that you can use with other tools, use the --export-path option.

How to configure SSL certificate in .NET core? ›

Install SSL Certificates
  1. Gather the necessary files.
  2. Find out the certificate file type and format your web server requires.
  3. Convert the certificate file type with the web server compatible files.
  4. Install the certificates on your web server.
  5. Bind the installed SSL certificate to your web site.
  6. Test the certificate.

Does .NET core use OpenSSL? ›

NET Core uses OpenSSL on macOS , a dependency that must be installed separately. OpenSSL added support for TLS 1.2 in version 1.0. 1, and added support for TLS 1.3 in version 1.1.

How to install PEM certificate? ›

  1. Select Tools > Options > Advanced.
  2. Select Certificates, then click the View Certificates button. The Authorities tab is displayed in Certificate Manager.
  3. Click Import and select the cacert. ...
  4. When a dialog is displayed, ensure that the following option is checked: Trust this CA to identify websites.
  5. Click OK.

How do I fix security certificate is not trusted by a computer's operating system? ›

How to Fix SSL Certificate Error
  1. Diagnose the problem with an online tool.
  2. Install an intermediate certificate on your web server.
  3. Generate a new Certificate Signing Request.
  4. Upgrade to a dedicated IP address.
  5. Get a wildcard SSL certificate.
  6. Change all URLS to HTTPS.
  7. Renew your SSL certificate.
Nov 18, 2021

What are the 3 types of SSL certificates? ›

There are three recognized categories of SSL certificate authentication types:
  • Extended Validation (EV)
  • Organization Validation (OV)
  • Domain Validation (DV)

How do you fix this certificate is not trusted? ›

To resolve this problem, install the intermediate certificate (or chain certificate) file to the server that hosts your website. To do that, log into your DigiCert Management Console, click the order number, and then select the certificate download link. This file should be named DigiCertCA.

How to implement certificate authentication in asp net Core? ›

Get started
  1. Add a reference to the Microsoft. AspNetCore. Authentication. Certificate NuGet package.
  2. In Program. cs , call builder. Services. AddAuthentication(CertificateAuthenticationDefaults. AuthenticationScheme). AddCertificate(...); .
Oct 31, 2022

Which certification is best for .NET developers? ›

If you want to enhance your programming skills, here's a list of eight .NET developer certifications you can consider:
  1. CompTIA A+ certification. ...
  2. CompTIA Network+ certification. ...
  3. IT Information Library Foundation (ITIL) 4 Foundation certification. ...
  4. Certified ScrumMaster (CSM) ...
  5. Certified Software Development Professional (CSDP)
Jan 3, 2022

How to implement SSL certificate in asp net? ›

How to install a free SSL certificate for a site on ASP.NET?
  1. Go to the "Web sites" section.
  2. Open website properties.
  3. Go to the SSL tab.
  4. Click "Install Certificate" button.

Is dotnet core dying? ›

It is not dead, and it will not be in the foreseeable future. The . NET Core updates may have distressed many developers. They may not be able to use the major functions of the original platform due to significant modifications made by unifying the .

Is .NET Core outdated? ›

The long-term-support (LTS) version 3.1 of Microsoft . NET Core Framework is slated to go out of support on December 13th, 2022. Microsoft recommends upgrading . NET Core 3.1 applications to .

Is ASP.NET Core still used? ›

It is still widely used by developers and remains a top open-source framework on GitHub. In fact, according to the Stack Overflow 2021 developer survey, more than 15% of developers still prefer ASP.NET over other frameworks for their web development needs.

How to install certificate in Windows VM? ›

If so, you can logon this Windows machine using Administrator credential. And then try to install this ssl certificate by right clicking Trusted Root Certification Authorities\Certificates and selecting "All Tasks->Import" to install this certificate to see if it helps.

How do I get an SSL certificate for my virtual machine? ›

Install SSL Certificates on VM Access Proxies
  1. Remove the default self-signed certificate.
  2. Generate a new self-signed certificate.
  3. Create a certificate signing request.
  4. Generate a valid certificate through a CA.
  5. Add the CA signed certificates.
  6. Reset the VM Access Proxy.
  7. Reset the connection in Commander.

How do I manually add a certificate to my browser? ›

Go to chrome://settings.
  1. On the left, click Privacy and security.
  2. Click Security.
  3. Scroll to Advanced.
  4. Click Manage certificates.
  5. In the list, find the newly-added CAs.

Is .PEM cert and a key? ›

Privacy Enhanced Mail (PEM) files are a type of Public Key Infrastructure (PKI) file used for keys and certificates. PEM, initially invented to make e-mail secure, is now an Internet security standard.

Is .PEM a certificate? ›

A . pem file is a container format that may just include the public certificate or the entire certificate chain (private key, public key, root certificates): Private Key. Server Certificate (crt, puplic key)

Where is cert PEM in Windows? ›

On windows, you'll see that all certificates are in /usr/share/ca-certificates. However, the default location for certificates is /etc/ssl/certs. On RHEL5, it is located in /etc/pki/tls/certs/ca-bundle. pem.

How do I know if my certificate is self-signed or CA? ›

A certificate is self-signed if the subject and issuer match. A certificate is signed by a Certificate Authority (CA) if they are different. To validate a CA-signed certificate, you also need a CA certificate. The Details tab (not shown here) sections can be expanded to show each field in a certificate.

How do I reset my certificate trust settings? ›

Remove custom certificates
  1. Open your phone's Settings app.
  2. Tap Security Advanced settings. Encryption & credentials.
  3. Under "Credential storage": To clear all certificates: Tap Clear credentials. OK. To clear specific certificates: Tap User credentials. Choose the credentials you want to remove.

How do I mark a certificate as trusted in Windows? ›

Expand Policies > Windows Settings > Security Settings > Public Key Policies. Right-click Trusted Root Certification Authorities and select Import. Click Next and Browse to select the CA certificate you copied to the device. Click Finish and then OK.

What is the difference between SSL and SSL certificate? ›

An SSL certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection. SSL stands for Secure Sockets Layer, a security protocol that creates an encrypted link between a web server and a web browser.

Can SSL certificates be used on different servers? ›

That's okay — multi domain SSL certificates are very versatile and can help with that. You can use one to secure the following on one or more servers: Multiple subdomains, or. Up to 250 external IP addresses.

Which is best SSL certificate? ›

The Best SSL Certificate Services To Buy From In 2023
CompanyForbes Advisor RatingBest for
Comodo4.8Best Overall SSL Certificate Service
SSL.com3.3Best for Fast Turnaround Times
DigiCert3.3Best Customer Support
Sectigo3.3Best for E-Commerce Businesses
2 more rows
Oct 6, 2022

How do I force a certificate trust? ›

If you want to turn on SSL/TLS trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate.

Why is my site not secure even though certificate? ›

A common issue after adding an SSL certificate is that your browser still shows your site as insecure. This most often happens because there are links on your page that still point to HTTP instead of HTTPS.

How do I find untrusted certificates? ›

You can find some of the certificates in their GitHub repository. On Chrome, you can also export the certificate used for a tab. Click on "Not Secure", then click on "invalid" under "Certificate". See the details tab, then click "export" to save the certificate.

How do I enable Windows authentication in .NET core? ›

New project
  1. Create a new project.
  2. Select ASP.NET Core Web Application. Select Next.
  3. Provide a name in the Project name field. ...
  4. Select Change under Authentication.
  5. In the Change Authentication window, select Windows Authentication. ...
  6. Select Web Application.
  7. Select Create.
Aug 30, 2022

How many types of authentication are there in ASP.NET Core? ›

ASP.NET supports Forms Authentication, Passport Authentication, and Windows authentication providers. The mode is set to one of the authentication modes: Windows, Forms, Passport, or None. The default is Windows.

How does net core handle authentication and authorization? ›

Authentication is the process of determining a user's identity. Authorization is the process of determining whether a user has access to a resource. In ASP.NET Core, authentication is handled by the authentication service, IAuthenticationService, which is used by authentication middleware.

What is a .NET developer salary? ›

How much does a Net Developer make? As of Jan 10, 2023, the average annual pay for a Net Developer in the United States is $106,184 a year. Just in case you need a simple salary calculator, that works out to be approximately $51.05 an hour. This is the equivalent of $2,042/week or $8,848/month.

What certifications are in demand for developers? ›

  • AWS Certified Developer Associate. ...
  • AWS Certified Solutions Architect-Associate. ...
  • C and C++ Certifications. ...
  • Oracle Certified Associate Java Programmer OCAJP. ...
  • Certified Associate in Python Programming (PCAP) ...
  • R Programming Certification. ...
  • CCA Spark and Hadoop Developer.
Dec 23, 2022

Are .NET developers well paid? ›

The national average salary for a . NET Developer is ₹5,00,000 in India.

What is SSL in asp net core? ›

Take advantage of HTTPS and the HSTS security enhancement to encrypt web client and server communications in your ASP.Net Core applications. Thinkstock. Secure Sockets Layer—SSL for short—is a standard security protocol that is used to encrypt communications between a web server and a web browser.

How do I use an SSL certificate in Windows? ›

In the Microsoft Management Console window, click on "Certificates (Local Computer)". Right-click on the "Trusted Root Certificate Authorities" in the left pane and select "All Tasks" and then "Import". Click "Next" in the "Certificate Import Wizard". Browse to where you saved the Securly certificate and select it.

How do I import an SSL certificate to Windows server? ›

In the left pane of the console, double-click Certificates (Local Computer). Right-click Personal, point to All Tasks, and then select Import. On the Welcome to the Certificate Import Wizard page, select Next. On the File to Import page, select Browse, locate your certificate file, and then select Next.

What is replacing .NET Core? ›

NET 5 is the next major release of . NET Core following 3.1. We named this new release . NET 5 instead of .

Is ASP.NET Core in demand? ›

If you've been wanting to hire ASP.NET developers for your organization, it's no surprise. Market demands are ever-changing, and consequently, web development companies are focused on employing professionals skilled in cutting-edge technologies to build custom apps.

Is .NET still in demand 2022? ›

A survey released by Stack Overflow this year in 2022 categorized the . NET Framework and . NET Core into one. It had increased in popularity from 34.2 percent to 34.55 percent to become the most popular frameworks list this year.

What are the disadvantages of .NET Core? ›

ASP.NET Core Cons

It will take a few years till existing products based on . NET Core will be fully updated. Though there are a lot of . NET developers on the market, ASP.NET Core framework is a huge step forward comparing to ASP.NET Framework and there are many changes and new concepts.

Which technology is discontinued in .NET Core? ›

NET Core no longer contains APIs such as GetMembers(), but continues to expose APIs such as Name.

Is ASP.NET Core deprecated? ›

Starting with the December 2022 servicing update for Visual Studio 2019 16.11, Visual Studio 2019 17.0, and Visual Studio 2022 17.2, the . NET Core 3.1 component in Visual Studio will be changed to out of support and optional.

What is the difference between ASP.NET Core and .NET Core? ›

NET is a C#, C++, F# framework that makes desktop development easier and faster. ASP.NET is a framework that has the same functionality as . NET, only it's adapted to writing backend for web pages and web apps. Developers can use the same tools, libraries, and infrastructure to build web and desktop projects.

Is ASP.NET Core worth learning in 2022? ›

Yes, of course, . NET is worth learning in 2022.By learning . NET, software developers can build modern, high-performing, secure, scalable and responsive applications to match ever-changing client needs.

Can ASP.NET Core run on Linux? ›

ASP.NET Core is Microsoft's cross-platform and open-source redesign of its original ASP.NET framework. With ASP.NET Core, you can build and run . NET applications not only on Windows but also macOS and Linux.

How do I manually add Certificates? ›

In order to import the certificate you need to access it from the Microsoft Management Console (MMC).
  1. Open the MMC (Start > Run > MMC).
  2. Go to File > Add / Remove Snap In.
  3. Double Click Certificates.
  4. Select Computer Account.
  5. Select Local Computer > Finish.
  6. Click OK to exit the Snap-In window.

Where do I put Certificates in Linux? ›

Linux (Ubuntu, Debian)
  1. Copy your CA to dir /usr/local/share/ca-certificates/
  2. Use command: sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt.
  3. Update the CA store: sudo update-ca-certificates.

How do I apply a certificate in Linux? ›

How to install an SSL certificate on a Linux Server that has Plesk
  1. First Log into the control panel of Plesk.
  2. Then, Select Domain;
  3. The third step implies choosing the domain to be updated.
  4. In the next step click on the 'Add New Certificate' icon.
  5. Save the certificate name in the 'Certificate Name' box.
May 21, 2022

How do I import an SSL certificate into Windows? ›

Import the certificate into the local computer store

In the Open box, type mmc, and then select OK. On the File menu, select Add/Remove snap-in. In the Add/Remove Snap-in dialog box, select Add. In the Add Standalone Snap-in dialog box, select Certificates, and then select Add.

Why are all my certificates invalid? ›

The most common cause of a "certificate not trusted" error is that the certificate installation was not properly completed on the server (or servers) hosting the site. Use our SSL Certificate tester to check for this issue. In the tester, an incomplete installation shows one certificate file and a broken red chain.

How do I enable certificates in Windows? ›

Adding certificate snap-ins
  1. Launch MMC (mmc.exe).
  2. Choose File > Add/Remove Snap-ins.
  3. Choose Certificates, then choose Add.
  4. Choose My user account.
  5. Choose Add again and this time select Computer Account.
Apr 12, 2022

Where do browsers get certificates? ›

Browsers are shipped with a built-in list of trusted roots, called a trust store. A trust store is a collection of root certificates that are trusted by default and are maintained by the companies that make operating systems and web browsers, such as Apple, Microsoft, Mozilla, and Google.

How do I make my browser accept self signed certificates? ›

Go to the Settings > Privacy and security> Manage certificates in Google Chrome. Go to Trusted Root Certification Authorities and click Import… Click Next and then click Browse… to select the certificate you'd downloaded.

How do I force Windows Update certificates? ›

Updating SSL Certificate
  1. Click Start, and then click Run....
  2. Type mmc, and then click OK. ...
  3. In the Console1 window, click File, and then select Add/Remove Snap-in.
  4. In the Add or Remove Snap-ins window, select Certificates, and then click Add.
  5. In the Computer Account window, select Computer Account, and then click Next.

How do you check what certificates are installed in Linux? ›

Certificate files in Linux are located by default in the /etc/pki/tls/certs folder or sometimes within an application-specific folder such as /etc/httpd for Apache. These generally use . pem or . crt extensions and will likely be named yourdomain.

How do I manage certificates in Linux? ›

The easy way to manage certificates is navigate to chrome://settings/certificates. Then click on the “Manage Certificates” button. This will load a built-in interface for managing certificates.

How do I update SSL certificate in Linux? ›

Renew SSL/TLS certificate OpenSSL [Step-by-Step]
  1. Step-1: Revoke the existing server certificate.
  2. Step-2: Generate a Certificate Revocation List (CRL)
  3. Step-3: Renew server certificate.
  4. Step-4: Verify renewed server certificate.

How to import self signed certificate in Linux? ›

Adding the self-signed certificate as trusted to a browser (Linux...
  1. Create a /usr/local/share/ca-certificates/ directory if it does not exist on your computer: mkdir /usr/local/share/ca-certificates/
  2. Copy your root certificate (.crt file) to the created directory: ...
  3. Update the certificates:

How do I create a SSL certificate in Linux? ›

How to Generate a Self-Signed SSL Certificate on Linux
  1. Step 1: Create an RSA Keypair.
  2. Step 2: Extract the Private Key into the “httpd” Folder.
  3. Step 3: Creating a “Certificate Signing Request” (CSR) File.
  4. Step 4: Creating the Certificate “.crt” File.
  5. Step 5: Configuring Apache to Use the Files.
Nov 7, 2018

How to generate SSL certificate and key in Linux? ›

Create Self-Signed Certificates using OpenSSL
  1. Create the Server Private Key. openssl genrsa -out server.key 2048.
  2. Create Certificate Signing Request Configuration. We will create a csr. ...
  3. Generate Certificate Signing Request (CSR) Using Server Private Key. ...
  4. Create a external file. ...
  5. Generate SSL certificate With self signed CA.
Aug 1, 2022


1. .NET Core Console App with Dependency Injection, Logging, and Settings
2. Quick Start! Set up .Net Core Dev Environment on Ubuntu
(Les Jackson)
3. (Live) Brunch with Scott Hanselman Developing for Linux & Windows on Windows using WSL
(Microsoft User Group Singapore)
4. Visual Studio Code for C# Developers | .NET Conf 2022
5. ASP.NET Community Standup - Implementing Authentication and Security in ASP.NET Core
6. Trusted Self-signed SSL Certificate and local domains for testing
(Tech Forum)
Top Articles
Latest Posts
Article information

Author: Prof. An Powlowski

Last Updated: 03/06/2023

Views: 5538

Rating: 4.3 / 5 (44 voted)

Reviews: 83% of readers found this page helpful

Author information

Name: Prof. An Powlowski

Birthday: 1992-09-29

Address: Apt. 994 8891 Orval Hill, Brittnyburgh, AZ 41023-0398

Phone: +26417467956738

Job: District Marketing Strategist

Hobby: Embroidery, Bodybuilding, Motor sports, Amateur radio, Wood carving, Whittling, Air sports

Introduction: My name is Prof. An Powlowski, I am a charming, helpful, attractive, good, graceful, thoughtful, vast person who loves writing and wants to share my knowledge and understanding with you.