1,746 questions
The remote certificate is invalid according to the validation procedure.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(265.6, 60%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EV%3C/text%3E%3C/svg%3E)
Vinisha
1
Reputation point
The remote certificate is invalid according to the validation procedure.
I am getting this error on the IIS server while making a web API call to external web service in C# and ASP.Net. if i run the code on my local Visual Studio, I am not getting that error and it works fine. I am not able to find why this error is being thrown, can somebody shed some light? thanks.
Windows development | Internet Information Services
Developer technologies | C#
11,579 questions
{count} votes
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(3.2, 24%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESW%3C/text%3E%3C/svg%3E)
Sam Wu-MSFT 7,561 Reputation points Microsoft External Staff2021-10-06T07:15:22.35+00:00 @Vinisha "The remote certificate is invalid according to the validation procedure" error, it is likely that your server certificate is self-signed, or you have used the wrong host name to connect (the host name must match the name on the certificate), for example imap.example.com and example.com may point to the same server, but certificate is issued only to imap.example.com and this is the address you should use), so please check the certificate in your IIS.
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(28.799999999999997, 79%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAS%3C/text%3E%3C/svg%3E)
Andrew Stevenson 5 Reputation points2024-04-12T10:14:44.55+00:00 If you have added a self-signed certificate on a server, and you are testing from another machine, then copy the certificate file to your test machine and install the cert as a trusted root.
You can also get the certificate from your browser: open the URL of the web service, click on the security (or site info) icon in the address bar, open the certificate and save/export it to your machine as a .cer file. Then import it into your certificate store as a trusted root.
-
Lex Li 6,037 Reputation points2024-04-12T18:46:02.7466667+00:00 The very first troubleshooting step in this case is to learn more about what is "the remote certificate" in that error message. Usually you need a tool like Wireshark to capture TLS handshake packets and then analyze them to know the details.
If you or your team are not familiar with such tools and troubleshooting steps, you might open a support case via https://support.microsoft.com to get more assistance.
Sign in to comment
Sign in to answer