I kind of found a fix.
https://www.ccleaner.com/ccleaner/builds
Download the portable no installer version and that works for me while I wait for a fix.
Freshly updated to 5.67.7763 64 Bit
I am running windows 10 pro 64-bit
I just bought a license to use the software updater feature.
All I get is "An error occurred with code: Failed to make connection (26)"
I've disabled Emsisoft and malwarebytes to see if either of those were the issue.