Some users using older versions of CCleaner have received ‘CCleaner is not compatible with this version of Windows‘ warning on Windows 10 build 14393.576. Piriform is recommending affected users to fix the issue by downloading and reinstalling the latest version of CCleaner from their cleaning tool site.

Fix CCleaner’s Windows 10 compatibility warning

“A small number of users who try to use old versions of CCleaner in the latest Windows 10 update are being told that CCleaner is ‘..not compatible with this version of Windows’. The version of Windows 10 which is affected is 14393.576.

“Fortunately this issue is easily resolved by downloading and reinstalling CCleaner from the following links:” Piriform said on its support site.

Speccy Gets Windows 10 Support

After launching CCleaner it displays which version you’re using in its main window. To know Windows 10 version you’re using, type ‘winver’ in Run dialog.

FYI, the latest version of CCleaner at the time of writing is 5.28 and Windows 10’s is  Windows version 1697 OS build 14393.693.

CCleaner Now Uninstalls Windows Store Apps in Windows 8 & 10