I am getting the below error at login, no event logs giving any further information.

Win 8.1 machine, 64 bit.

I have tried https:// (IP, locahost, hostname, 127.0.0.1):1311

I can login to the web server side without issue but it only allows shutdown of the web server and viewing the web server logs, not the actual system administrator.

I have shutdown AV and firewall, started both back up, no joy

I know the username is valid....I have also attempted Domain admin, additional local admin accounts without success. 

Uninstalled and re-installed no joy either.

Does anyone have a suggestions at this point, and please review the already attempted solutions above before replying unless you have an alternative to how I've already tried the above.

Cheers