Default Agent Disconnected

Have you recently updated server?

Please attach files from <build agent>/logs folder.

If you have updated the server, most likely you have started build agent while it was upgrading.
This always tends to corruption.

Please stop build agent, ensure there are no running java processes,
reinstall build agent and start it.Wait (up to 15 minutes) for build agent
to connect.

Please attach server logs too (from <server>/logs/teamcity*.log)

Thanks!

Hi Eugene

Thanks,  after I reinstalled all is well

Cheers
Ken