Unable to register with the server at https://xxxxx.xxxx

[selyod]

hello all
Error reads (on one pc only!) Windows xp sp3 - agent version 10.1.3

Unexpected server result. Server code: -34 Server message Invalid Device Authentication Information.

This was a pc that had the agent on, had the image safe data cleared and was reimaged. All went fine bar this issue.

Any clues?

Many thanks
Chris