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CCleaner version 5.38.6375


repairman6491

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was this an over-the-top install, or a fresh one?

OS version?

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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let's clutch this straw...

uninstall your current version.
then go into the Program Files folder for CC and delete its contents (keep the .ini file if you have customised settings)
if you no longer have your download, get the latest build from here; https://www.piriform.com/ccleaner/builds
reboot the PC then install CC from your downloaded file.

if no luck, try the install with the PC in Safe Mode.

when you say you open it from the taskbar, do you mean the system tray (as in you have Monitoring turned on) or the taskbar (you manually created a shortcut there)?

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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no worries, thanks for letting us know.

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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let's try and find the differences between those two PCs.

what are their AV softwares?
they both have the same versions of CC and Win8.1?
the login account for both is an Administrator level?

when you did get CC working, what changed to put it back to not working - a reboot?
were you still in Safe Mode when it did work?

I'm still confused about this "icon shortcut on the taskbar"???
perhaps a screenshot will help.

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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Guest Stephen CCleaner

Are you installing to a custom directory that has permissions restrictions, or do you perhaps restrict access to the Program Files directories to Administrators only?

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try removing and recreating that taskbar link.

looks like you are using Defender as your AV, check the App & Browser control section.
in particular, the Exploit protection section, and CFG (control flow guard) under System settings, and under Program settings, see if CC is listed.

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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