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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IMPORTANT: You may experience problems running CCleaner if your AV definitions are out of date.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. ccleaner won't open after windows 10 march 2020 update

    By justclean,
    • 1 reply
    • 1.4k views

  2. ccleaner pro wont run

    By flymann1952,
    • 5 replies
    • 1k views

  3. mr REV STEPHEN brusini

    By steff100,
    • 1 reply
    • 952 views

  4. Karen

    By K H,
    • 2 replies
    • 881 views

  5. Registration Failure ver 5.65.7632

    By Tom Lennon,
    • 3 replies
    • 484 views

  6. Receiving Error that ccleaner is accessing unauthorized memory

    By Prabbit,
    • 1 reply
    • 2.4k views

  7. Can`t reach server

    By Oldfolks,
    • 1 reply
    • 840 views

  8. No Icon

    By Giapet,
    • 0 replies
    • 165 views

  9. Edge Issue

    By Andres Lara,
    • 6 replies
    • 2.2k views

  10. All cookies deleted

    By Albert Delahaye,
    • 5 replies
    • 247 views

  11. Health Check deleted Chrome history when Chrome is unchecked in settings

    By asgallant,
    • 4 replies
    • 1.1k views

  12. Proud UK User

    By Proud UK User,
    • 1 reply
    • 504 views

  13. Windows 10 Start-Search option not working

    By Mudball,
    • 6 replies
    • 1.6k views

  14. I renewed my licensehat my license isexpiration notice

    By Uncle Woody,
    • 3 replies
    • 827 views

  15. Ccleaner Professional STILL doesn't clean Edge Chromium automatically

    By FlyingV,
    • 0 replies
    • 1k views

  16. CCleaner 5.64 adds garbage to ccleaner.ini file [to be fixed in v5.65]

    By larryg1516,
    • 10 replies
    • 1.8k views

  17. Tracking Cookies Not Cleaned

    By RexJ,
    • 1 reply
    • 577 views

  18. Installation Freeze

    By SV FRRS,
    • 1 reply
    • 486 views

  19. Update installation error :

    By Damora,
    • 1 reply
    • 280 views

  20. CCleaner application hang

    By 1619415,
    • 1 reply
    • 590 views

  21. CCleaner 5.64 won't install

    By wabbaloo,
    • 2 replies
    • 742 views

  22. CCleaner Hangs

    By Blickie,
    • 1 reply
    • 696 views

  23. gjs

    By gjs,
    • 0 replies
    • 470 views

  24. CCleaner not clearing Firefox Recent History

    By John27,
    • 7 replies
    • 2.4k views

  25. Richard

    By Zwooo,
    • 1 reply
    • 873 views
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