On a regular basis in the Windows Application and SQL Server logs, I see these errors:
SQL Server Log:
Login failed for user 'domain\acct'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: <local machine>]
SQL database login for 'SharePoint_Config' on instance 'SERVER' failed. Additional error information from SQL Server is included below. Login failed for user 'domain\acct'.
I don't know what application is needing access, and I don't think what ever it is needs access.
Is there a way to tell what application is trying to access SQL Server and the IP address?