CCMexec stops right after it has been started

I my environment, I suddenly had a lot of inactive clients. I thought that it was strange, so I dived into the issue.
Looking at a client, I found that the ccmexec service wasn't running.
I started the ccmexec service, but it stopped immediately (later I found that, on other client the service stopped after 5 minutes - they would start a repair, and then fail and stop).
Then I looked into the ccmexec.log and found this:
Service settings instance is missing from WMI.

Error loading service settings. Code 0x87d00218 Phase 0 initialization failed (0x87d00218). Service initialization failed (0x87d00218). Shutting down CCMEXEC
x

I tried a repair, but that didn't solve the problem.
Taking a deeper look into the log told me that the client had a problem with the ccm part of wmi.
I then tried to do a client push with the uninstall option checked - and now... Happy client again.

Looking at all my inactive clients - suddenly 10-15% og my environment - it seemed like this issue happened during the upgrade to 1602.