Description: Sharing is Caring
We recently deployed the Workflow Manager in SharePoint 2019 farm. After we deployed the April 2020 CU, the SharePoint 2013 style workflows were getting stuck on starting with the following error.
System.Net.WebException: The request was aborted: The request was canceled. —> System.InvalidOperationException: None of the trusted issuers specified by the server’s 401 challenge match the client’s known issuer ‘00000005-0000-0000-c000-000000000000@e2a61c0c-7b9c-4095-a643-554242c8cb17’. For reference, the following trusted issuers were returned by the server: 00000005-0000-0000-c000-000000000000*, 00000003-0000-0ff1-ce00-000000000000@e2a61c0c-7b9c-4095-a643-554242c8cb17.
The root cause of this error is incorrect RegisteredIssuerName in the SPTrustedSecurityTokenIssuer.