Registry Cleaner cannot save deleted registry files in 5.38

[coover]

Running Dell Venue 11 Pro with i5-4300Y CPU and 4 GB RAM ... Windows 10 Build 16299.125

I have installed the latest free version of CCleaner, 5.38, and I attempted to clean the registry. When I get to the part about saving the to be deleted registry files in my Document Folder, I get the following error message ... "File not found. Check the file name and try again". I uninstalled CCleaner from the machine, reinstalled it, and tried again. I got the same result and could not clean the registry. 

[dvdbane]

try check whether windows defender controlled folder access is enable or not

if it is enable, try disable it then clean the registry again

Do not clean all detected registry problem unless you know what you're doing

https://support.microsoft.com/en-us/help/4046851/windows-10-controlled-folder-access-windows-defender-security-center