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IMPORTANT: Users are reporting that recent versions of CCleaner do not open when their AV is out of date.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

Followers 8

7,038 topics in this forum

  1. CCleaner will not start anymore - W10 - CC 5.57

    By Peaceful Jim,
    • 16 replies
    • 1.6k views

  2. pc health check

    By kpetru,
    • 0 replies
    • 112 views

  3. Ccleaner will not install in Windows 10. Black box appears does nothing

    By Tyler67,
    • 1 reply
    • 149 views

  4. Profeccional Home Latest Update as of 3/27/20 will no longer run on my Windows10

    By GVR,
    • 1 reply
    • 141 views

  5. CCleaner not opening

    By Matt C,
    • 16 replies
    • 968 views

  6. Error opening file for writing

    By GerardO,
    • 2 replies
    • 1.2k views

  7. CCleaner 5.57.7182 stuck/freeze during IE cleaning

    By TheOwner,
    • 2 replies
    • 1.6k views

  8. Run Cleaner Grayed Out

    By djpaulwb,
    • 3 replies
    • 221 views

  9. PhilHal

    By PhilHal2,
    • 1 reply
    • 100 views

  10. ccleaner won't open after windows 10 march 2020 update

    By justclean,
    • 1 reply
    • 858 views

  11. ccleaner pro wont run

    By flymann1952,
    • 5 replies
    • 687 views

  12. mr REV STEPHEN brusini

    By steff100,
    • 1 reply
    • 114 views

  13. Karen

    By K H,
    • 2 replies
    • 174 views

  14. Registration Failure ver 5.65.7632

    By Tom Lennon,
    • 3 replies
    • 223 views

  15. Receiving Error that ccleaner is accessing unauthorized memory

    By Prabbit,
    • 1 reply
    • 340 views

  16. Can`t reach server

    By Oldfolks,
    • 1 reply
    • 262 views

  17. No Icon

    By Giapet,
    • 0 replies
    • 88 views

  18. Edge Issue

    By Andres Lara,
    • 6 replies
    • 603 views

  19. All cookies deleted

    By Albert Delahaye,
    • 5 replies
    • 142 views

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

    By asgallant,
    • 4 replies
    • 212 views

  21. Proud UK User

    By Proud UK User,
    • 1 reply
    • 91 views

  22. Windows 10 Start-Search option not working

    By Mudball,
    • 6 replies
    • 184 views

  23. I renewed my licensehat my license isexpiration notice

    By Uncle Woody,
    • 3 replies
    • 227 views

  24. Lost Firefox History

    By fotofundi,
    • 11 replies
    • 458 views

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

    By FlyingV,
    • 0 replies
    • 132 views
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