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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IMPORTANT: Users are reporting that recent versions of CCleaner do not open when their AV is out of date.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 10

7,015 topics in this forum

  1. Need to disable unwanted Software Updater [user error]

    By Gruntle,
    • 11 replies
    • 1.4k views

  2. John

    By John D,
    • 1 reply
    • 129 views

  3. Crashes Windows 10 when cleaning 1 2

    By gmorknada,
    • 37 replies
    • 14.8k views

  4. "Need Windows 7 or higher" error on Windows 10 [solution]

    By Tom Moreland,
    • 8 replies
    • 468 views

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

    By Peaceful Jim,
    • 16 replies
    • 1.5k views

  6. pc health check

    By kpetru,
    • 0 replies
    • 110 views

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

    By Tyler67,
    • 1 reply
    • 143 views

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

    By GVR,
    • 1 reply
    • 135 views

  9. CCleaner not opening

    By Matt C,
    • 16 replies
    • 899 views

  10. Error opening file for writing

    By GerardO,
    • 2 replies
    • 1.2k views

  11. CCleaner 5.57.7182 stuck/freeze during IE cleaning

    By TheOwner,
    • 2 replies
    • 1.5k views

  12. Run Cleaner Grayed Out

    By djpaulwb,
    • 3 replies
    • 207 views

  13. PhilHal

    By PhilHal2,
    • 1 reply
    • 100 views

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

    By justclean,
    • 1 reply
    • 819 views

  15. ccleaner pro wont run

    By flymann1952,
    • 5 replies
    • 676 views

  16. mr REV STEPHEN brusini

    By steff100,
    • 1 reply
    • 110 views

  17. Karen

    By K H,
    • 2 replies
    • 173 views

  18. Registration Failure ver 5.65.7632

    By Tom Lennon,
    • 3 replies
    • 205 views

  19. Receiving Error that ccleaner is accessing unauthorized memory

    By Prabbit,
    • 1 reply
    • 301 views

  20. Can`t reach server

    By Oldfolks,
    • 1 reply
    • 245 views

  21. No Icon

    By Giapet,
    • 0 replies
    • 86 views

  22. Edge Issue

    By Andres Lara,
    • 6 replies
    • 557 views

  23. All cookies deleted

    By Albert Delahaye,
    • 5 replies
    • 135 views

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

    By asgallant,
    • 4 replies
    • 200 views

  25. Proud UK User

    By Proud UK User,
    • 1 reply
    • 90 views
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