When I run CCleaner (v5.39.6399 (64 bit), as it finishes, I get a Windows prompt that says "defaults has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." And there is a button to close the program. CCleaner seems to work ok, once I close the prompt.
What is going on? Can it be corrected?
That is quite a strange error message. Are you able to open Settings from Win start menu when this happens?
I see you have been getting Blue Screens of Death, have you tracked down the cause of them?
What security software do you have running?
Have you tried running a System File Check?
Hello, Hazelnut, I am not getting the Blue Screen of Death, only the pop-up that I sent. I am running Avast premium antivirus, but no others. I have not run a System File Check. I will do so and report back. Thank you for answering!
The reason I mentioned BSOD is I saw in your cleaning logs screenshot that it was cleaning 'System..Memory Dumps' which are usually records of BSOD that have happened.
See in the list here
https://www.ccleaner.com/docs/ccleaner/ccleaner-rules/windows-tab/system-files
Oh, Ok. I ran system checker but it will not let me access the scan logs! It reported that I do have corrupted system files. I have researched how to take ownership of the log file, and it is extremely complex. The take ownership hack doesn't seem to make it accessible. I may just live with this prompt. The CCleaner scan does its job. I find sometimes that glitches such as the one I am reporting sometimes go away on their own, as if a computer has a built-in immune system that eventually takes care of the bug! LOL