The update process is uninstalling the server prior to checking for ‘sysadmin’ permissions.
And produces error :
Error Executing SQL Script UpdateSysInfo.sql on Line 46 The server principal “ Domain\username” is not able to access the database “NpsSqlSys” under the current security context
Logon fails, with the following error message: Sorry, the user id or password is invalid. Please try again. Or logon (Millennium browsed via https) is successful, but various Millennium functions, e.g. Reporting fail with an unsupported plugin error.