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CCleaner Bug Reporting

Is CCleaner not working properly on your system? Then let us know (with details to help us hunt down the problem to solve it for you and for others).
IMPORTANT: You may experience problems running CCleaner if your AV definitions are out of date.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.

7,540 topics in this forum

  1. Multiple update notification popups

    By redbuppy,
    • 21 replies
    • 1.8k views

  2. CCleaner is hanging up while trying to uninstall

    By hiyeahitsme,
    • 1 reply
    • 1k views

  3. Using Reg Cleaner in CC 5.76.8269 and Surface 6 Pro leads to camera malfunction

    By Tegus,
    • 3 replies
    • 1k views

  4. licencenumber

    By lucpeeters,
    • 1 reply
    • 816 views

  5. CCleaner System tray crash

    By Andres Lara,
    • 2 replies
    • 1.3k views

  6. CCleaner stopped working

    By spireman,
    • 2 replies
    • 541 views

  7. CCleaner fails to find duplicates

    By Hmm,
    • 1 reply
    • 1.1k views

  8. licence

    By lucpeeters,
    • 1 reply
    • 654 views

  9. CCleaner v5.64.7613 cleaning duplication doubling bug

    By Andavari,
    • 6 replies
    • 1.7k views

  10. CCleaner breaks Firefox's service workers

    By XhmikosR,
    • 8 replies
    • 1.2k views

  11. Cannot find the path and permission error in CCleaner 5.73.xxxx

    By ZsoltKantor,
    • 18 replies
    • 1.7k views

  12. CCleaner 5.75 or 5.70 crashing on start up.

    By zeeny,
    • 8 replies
    • 1.8k views

  13. CCleaner won't keep license key

    By Eric S,
    • 2 replies
    • 892 views

  14. The custom column size is reset to the default

    By B1NOM,
    • 1 reply
    • 807 views

  15. CCleaner Professional closes when minimized to the system tray.

    By Tom H,
    • 1 reply
    • 574 views

  16. Can't disable CCleaner to start automatically with Windows.

    By kockarche,
    • 1 reply
    • 1.5k views

  17. offline issue

    By alh,
    • 14 replies
    • 6.2k views

  18. Version 5.64.7577 (final Windows XP & Vista) says update to 5.75.8238 is needed

    By djpaulwb,
    • 2 replies
    • 2.2k views

  19. Regardless how many times I uncheck

    By jagman,
    • 17 replies
    • 1.8k views

  20. CCleaner 5.75 cannot close Avast Secure Browser

    By dziadzio,
    • 2 replies
    • 1.3k views

  21. Imposible conectar al servidor + error actualizador software

    By Miquel Alvarez,
    • 1 reply
    • 1.1k views

  22. Problem for register button

    By windowsswiss,
    • 1 reply
    • 1.1k views

  23. ccleaner health check reports wrong irfanview version

    By trezac,
    • 4 replies
    • 613 views

  24. New update leaves CCleaner running on System Tray after it's closed. 1 2

    By markfleener,
    • 25 replies
    • 11k views

  25. Update from v5.73.8140 64 bit fails

    By NBNorth,
    • 1 reply
    • 656 views
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