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Specified Issuer could not be found error with Windows STS

  • December 28, 2023
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Topic

When logging into K2 using Windows STS, the following error appears:

Specified Issuer could not be found. For more information see <a href='http://k2.com/BXEQPJB'>http://k2.com/BXEQPJB</a>;
Please check the IssuerName in the web.config and ensure that the configuration has been setup appropriately.


Instructions 

Please check the Thumbprint value in the following areas:
1. K2 Windows STS web.config located in [K2 Install Path]\WebServices\Identity\Sts\Windows, look for this line: 
<add key="Thumbprint" value="" />
2. [Identity].[ClaimIssuer] table

If there is a mismatch, you can confirm the correct thumbprint based on the Certificate Hash of the valid K2 STS Certificate  in IIS > Server Certificates, and then update the thumbprint value accordingly.