When try to access the Plesk control panel in windows server error occurs:
“\’Server error (code 500): Exception with message\’SQLSTATE[HY000]: General error: 10 disk I/O error\’ caught at top level.\”
This error occurs due to no free space available on the server.You need to check the server drives and remove the unwanted files.
If you are getting user account was not found error in plesk you may check our article on plesk error: the user account was not found