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IMPORTANT: Users are reporting that recent versions of CCleaner do not open when their AV is out of date.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

6,844 topics in this forum

  1. Unremovable Registry Entires 1 2

    By war59312,
    • 33 replies
    • 11,763 views

  2. CCleaner 5.42.6495 (64-bit) crashing 1 2

    By punuk,
    • 34 replies
    • 11,682 views

  3. CCleaner Does not Clean Browsing History

    By tdl,
    • 17 replies
    • 11,609 views

  4. v5.10.5373 slow to launch 1 2 3

    By nukecad,
    • 74 replies
    • 11,595 views

  5. Volume doesn't contain recognized file system

    By trose,
    • 12 replies
    • 11,404 views

  6. CCleaner is incredibly slow now

    By Dark_Sage,
    • 5 replies
    • 11,284 views

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

    By occam,
    • 3 replies
    • 11,240 views

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

    By scottedwards2000,
    • 16 replies
    • 11,137 views

  9. Ccleaner - Startup reading

    By natalia1,
    • 4 replies
    • 10,993 views

  10. 5.46 Latest Version Unwanted and Problems 1 2 3 4

    By ArchAngle,
    • 84 replies
    • 10,776 views

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

    By wembley61,
    • 8 replies
    • 10,715 views

  12. CCleaner Freezes / Locks Up (SOLVED)

    By Average User,
    • 0 replies
    • 10,669 views

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

    By RunAmok,
    • 46 replies
    • 10,605 views

  14. CCleaner deletes MS Word data key in registry

    By srdiamond,
    • 8 replies
    • 10,548 views

  15. "Skip UAC" for all user accounts

    By srwpchelp,
    • 6 replies
    • 10,523 views

  16. [2.19.900] Deleting Firefox Saved Passwords 1 2

    By Jahamaville,
    • 30 replies
    • 10,466 views

  17. CCleaner V4.09 contains trojan virus

    By Chouette,
    • 20 replies
    • 10,456 views

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

    By Sinderan,
    • 26 replies
    • 10,382 views

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

    By GJim,
    • 9 replies
    • 10,309 views

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

    By Steven_Todd,
    • 52 replies
    • 10,269 views

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

    By Spiff,
    • 2 replies
    • 10,108 views

  22. Help Me Please 1 2

    By krit86lr,
    • 35 replies
    • 10,018 views

  23. Hotfix Uninstaller problem

    By medab_1,
    • 14 replies
    • 9,855 views

  24. Display Recent Documents

    By nickanis,
    • 14 replies
    • 9,780 views

  25. Checking "Internet History" under "Chrome" when cleaning will result in all Chrome extensions and preferences being deleted.

    By -Alexander-,
    • 6 replies
    • 9,766 views
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