CCleaner - FAQ
Optimization and Cleaning
What operating systems does CCleaner support?
CCleaner is fully tested and compatible with all the latest Windows OSs.
This includes both 32-bit and 64-bit versions of:
- Windows 10
- Windows 8
- Windows 7
For business users, we also support:
- Windows Server 2012
- Windows Server 2008 R2
- Windows Server 2008
- Windows Server 2003
Additionally we have released a version of CCleaner for Macs, which requires:
- Mac OS X 10.8 Mountain Lion to 10.11 El Capitan 64-bit editions