Forum Discussion
Unable to authenticate with MSAL using a certificate
Hi guys, I'm using the certificate authentication for my WinForms app to connect to SharePoint and Graph API. I followed this article to create the certificate https://learn.microsoft.com/en-us/entr...
The error you are getting hints at a mismatch of the application identifier, not the certificate thumbprint. Make sure the iss/sub claims in your assertion payload match the client ID of the application.