Yea. Haven't touched the service account, which is actually my username/password, and with appropriate privileges. No new security software added. Just Malware bytes and Windows defender.

Even a local backup from C:\temp to F:\temp won't run.

Version is 7.1.0.206

Will see about submitting a support case from the web site and manually submitting logs, which includes:

Communication error. Channel will be recreated. There was no endpoint listening at net.pipe://localhost/CloudBerryLabCloudBerry%20Backup/CBBPlanStatusMonitor that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.
2021-06-05 05:50:13,312 [PL] [48] ERROR - Failed to save status file

(ServiceCommunicationException) 00:00:33.2637595 206819 1048576/1048576 Running

Well, this is all VERY unfortunate indeed. I was more than happy to use my O365 based OneDrive as a backup destination, even at a trickle. Guess I'd better not delete my current OneDrive config as it still seems to be running.

Same issue here, and this is the ONLY Google search result. Would love to see a 'fix'. The response by 'Result-it' was poorly worded and not understandable.