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CCleaner Help Requests

Need help installing or using CCleaner on your PC? Be sure to check the the CCleaner support website. If you need information on your paid CCleaner licences, expiry dates, registration information and download links you can get that directly from the CCleaner licence lookup. Can't find the answer in the FAQ files? Maybe it has already been asked and answered here - or start your own thread.
IMPORTANT: You may experience problems running CCleaner if your AV definitions are out of date. If your CCleaner has stopped working and you are using an old version of Trend Micro antivirus protection, you will need to update your Trend Micro from here https://esupport.trendmicro.com/en-us/home/index.aspx.

1,715 topics in this forum

  1. Multiple CCleaner Licences

    By Richard Hatfield,
    • 4 replies
    • 1.1k views

  2. CCleaner 1.17.603 Wipe Freespace Not Working

    By Scribler,
    • 0 replies
    • 303 views

  3. CCleaner stuck at 32%

    By Toomas633,
    • 1 reply
    • 1k views

  4. CCleaner slow to load when blocked

    By LopezTech20,
    • 7 replies
    • 2.3k views

  5. Horrendous drop in quality after running CCleaner

    By mag1cally,
    • 1 reply
    • 815 views

  6. CCleaner won't run & Admin privileges are gone

    By conradauthor,
    • 2 replies
    • 512 views

  7. License key not received

    By Raymondo,
    • 4 replies
    • 2.2k views

  8. Can I get CCleaner for Windows 10?

    By Taffy078,
    • 6 replies
    • 1.4k views

  9. Cannot Clear Activities from Task View

    By Judesman,
    • 8 replies
    • 2.4k views

  10. Tracking

    By centurion,
    • 2 replies
    • 824 views

  11. Recebi uma licença

    By jose Carlos,
    • 1 reply
    • 486 views

  12. McAfee and ESET NOD32 False Postive for CCleaner 5.66 [consolidated thread]

    By rumblepup,
    • 15 replies
    • 2.5k views

  13. Upgrade not working

    By Scoopster57,
    • 1 reply
    • 621 views

  14. Auto extension cancellation doesn't work

    By Marc R,
    • 3 replies
    • 1.3k views

  15. Registry Cleaner will not run

    By rjjjbrown,
    • 4 replies
    • 772 views

  16. Notepad history

    By Smark67,
    • 5 replies
    • 932 views

  17. CCleaner Pro will not load.

    By James82,
    • 5 replies
    • 1.2k views

  18. 2 screens

    By eduard1,
    • 3 replies
    • 558 views

  19. help

    By Denisse,
    • 1 reply
    • 432 views

  20. Problems registering

    By Ernest Wolf,
    • 1 reply
    • 768 views

  21. Cant uninstall cc cleaner

    By HAIM,
    • 1 reply
    • 2k views

  22. Frank

    By Frank O'Peka,
    • 2 replies
    • 495 views

  23. Write error on updating to latest version; all frozen

    By Ron T,
    • 1 reply
    • 327 views

  24. unregistered error

    By Dianne K Wilay,
    • 1 reply
    • 498 views

  25. Update

    By G123,
    • 5 replies
    • 571 views

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