APC UPS Error – Someone is currently logged into the APC Management Web Server [RESOLVED]

If you get the following message when you try to log into the APC UPS web management page :-

‘Someone is currently logged into the APC Management Web Server. Please try again later.’

This happens when the session is locked.

To resolve this Telnet to the UPS and login via Telnet, then log out.

Now if you log in via the web management page you should be able to log in as the Telnet session will reset the connection