I am on 22623.1255 and when I click on Check for updates I am told I am up to date.
When I click on Windows Insider Programme I get the message.
A newer build is available in Windows update.
If I run troubleshooter, it says problem found detected and that it has made some changes.
Nothing is fixed and if you run it again you get the same result.
Is there a manual update you can run to get from 22623 to 22624?