Unable to access the administration settings after enabling SAML

After enabling the SAML Authentication OAuth Client, I'm unable to get back into the Administration settings or log into the site at all. 

The error is:

Unable to locate certificate in MY store (local mahcine account) based on the thumbprint '‎2f909771fb65dbe087bb315c9447b7e4f2c42ea0'; unable to sign authnrequest
Parameter name: thumbprint

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: Unable to locate certificate in MY store (local mahcine account) based on the thumbprint '‎2f909771fb65dbe087bb315c9447b7e4f2c42ea0'; unable to sign authnrequest
Parameter name: thumbprint

Any suggestions would be greatly appreciated.

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