Hey TG1
Have you already tried disabling Central Management on the UTM, then deleting any entry for this specific UTM on the SUM?
Then attempting to re-establish connection by re-enabliing Central Management on the UTM.
Please take a look at the following relevant threads to verify if any of the solutions are able to resolve your issue.
Thread 1 | Thread 2
Regards,
FloSupport | Community Support Engineer
I've tried disabling and re-enabling central management on the UTM several times, without success. I tried resetting the GUID via SSH, still no luck. There aren't any entries for this device on the SUM that I can see - it was connected to this SUM previously, but if there's some 'ghost' entry for it, it isn't visible in the card view or in any other part of the GUI I can find.
I ended up wiping the UTM completely, and am rebuilding it now to see if that resolves the issue.
Hey TG1
I apologize for this issue that has caused you inconvenience.
I will send you a PM to followup and ensure that it's resolved.
Regards,
FloSupport | Community Support Engineer