CCleaner - FAQ
Optimization and Cleaning
- Can I donate to Piriform?
- Can I add a link to CCleaner on my website?
- Is it ok to use CCleaner in my Business or to provide services to other companies?
- Where is the help file?
- How to download CCleaner
- Can I follow Piriform on Facebook?
- What operating systems does CCleaner support?
- Do I need to uninstall the old version of CCleaner when upgrading?
- Can CCleaner be installed and run silently?
- Do I need to be an administrator to install CCleaner?