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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).
IMPORTANT: Users are reporting that recent versions of CCleaner do not open when their AV is out of date. If your CCleaner 5.65 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.

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7,015 topics in this forum

  1. CCleaner failing 1 2 3

    By scotiabahn,
    • 50 replies
    • 12.2k views

  2. CCleaner marked as riskware, pls explain

    By GoodDog,
    • 11 replies
    • 12k views

  3. v5.10.5373 slow to launch 1 2 3

    By nukecad,
    • 74 replies
    • 11.9k views

  4. Unremovable Registry Entires 1 2

    By war59312,
    • 33 replies
    • 11.8k views

  5. CCleaner Does not Clean Browsing History

    By tdl,
    • 17 replies
    • 11.7k views

  6. Volume doesn't contain recognized file system

    By trose,
    • 12 replies
    • 11.5k views

  7. CCleaner is incredibly slow now

    By Dark_Sage,
    • 5 replies
    • 11.4k views

  8. Ccleaner - Startup reading

    By natalia1,
    • 4 replies
    • 11.4k views

  9. CCleaner Freezes / Locks Up (SOLVED)

    By Average User,
    • 0 replies
    • 11.3k views

  10. Windows cannot start the Windows Firewall/ICS service.

    By occam,
    • 3 replies
    • 11.3k views

  11. When I compact Chrome databases (NOT delete history) I can't search history any more

    By scottedwards2000,
    • 16 replies
    • 11.2k views

  12. Computer won't start after running CCleaner. HELP!

    By wembley61,
    • 8 replies
    • 11k views

  13. "Skip UAC" for all user accounts

    By srwpchelp,
    • 6 replies
    • 10.8k views

  14. Problem cleaning Recycle Bin in 3.11.1550 under XP 1 2

    By RunAmok,
    • 46 replies
    • 10.7k views

  15. [2.19.900] Deleting Firefox Saved Passwords 1 2

    By Jahamaville,
    • 30 replies
    • 10.7k views

  16. CCleaner deletes MS Word data key in registry

    By srdiamond,
    • 8 replies
    • 10.6k views

  17. CCleaner V4.09 contains trojan virus

    By Chouette,
    • 20 replies
    • 10.5k views

  18. Skip UAC Invalid Parameter on Windows 8 Pro x64 1 2

    By Sinderan,
    • 26 replies
    • 10.5k views

  19. Cookies Not Being Deleted From Delete Listing 1 2 3

    By Steven_Todd,
    • 52 replies
    • 10.5k views

  20. Running CCleaner as a scheduled task ... not working

    By GJim,
    • 9 replies
    • 10.4k views

  21. "Wipe Free Space" will not run unless "Wipe MFT Free Space" is checked.

    By Spiff,
    • 2 replies
    • 10.1k views

  22. Help Me Please 1 2

    By krit86lr,
    • 35 replies
    • 10.1k views

  23. Ccleaner crash report 1 2

    By super,
    • 45 replies
    • 10k views

  24. Hotfix Uninstaller problem

    By medab_1,
    • 14 replies
    • 9.9k views

  25. CCleaner cannot erase "Temporary Internet Files"

    By Flechette,
    • 9 replies
    • 9.9k views
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