@Philip13 @itsupport1 @escape75 @ukheather @Palo_Duro
This issue may not be CCleaner or Chrome after all:
Are any/all of you running ESET Internet Security?
If so then a solution has been found on another thread where Firefox files were suddenly not being cleaned for a user.
It was found there that a recent change to ESET Internet Security was blocking the cleaning of browser files.
The solution was simply to make CCleaner an exception in ESET’s “Browser Protection” feature.
The anomaly is caused by the ESET Internet Security software, specifically the “Browser Protection” feature. Since version 18.2.14.0, this feature locks the {browser} profile for editing, even when it is closed.
This explains the inability to delete {browser} files. When I included CCleaner in the exceptions of the aforementioned Browser Protection feature and ran the cleanup, everything it has was properly deleted …
I do note that the reports here pre-date that ESET changelog, so it may not be the same cause here.
However if any of you are running a 3rd party AV then it may be worth checking that it is not doing similar and blocking CCleaner from cleaning your browser files.