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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IMPORTANT: Users are reporting that recent versions of CCleaner do not open when their AV is out of date.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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7,013 topics in this forum

  1. CCcleaner free version being flagged as PUA:Win32/PiriformBundler [solved]

    By bnesbittok,
    • 4 replies
    • 471 views

  2. v5.75.8238 cookie problems

    By magic144,
    • 7 replies
    • 546 views

  3. Multiple update notification popups

    By redbuppy,
    • 21 replies
    • 466 views

  4. [SOLVED] Latest CCleaner CRASH

    By Akakima,
    • 1 reply
    • 155 views

  5. CCleaner Bomb

    By nakewe3,
    • 1 reply
    • 163 views

  6. Duplicate Items Are Listed To Be Cleaned After Analysis in V 5.75.8238

    By DonT5,
    • 1 reply
    • 151 views

  7. CCleaner...I want a divorce...

    By StraightUp,
    • 8 replies
    • 375 views

  8. CCleaner v5.75.8238 Announcements Forum Posting Wrong Version Number (5.74)

    By cbaumer0628,
    • 1 reply
    • 152 views

  9. cc v5.75 from 10.12.20 redirection doesnt work

    By trium,
    • 3 replies
    • 200 views

  10. Microsoft Exploit Guard has blocked an operation

    By mjohnsonn,
    • 0 replies
    • 166 views

  11. CCleaner 5.75.8238 check for update error

    By TheOwner,
    • 2 replies
    • 233 views

  12. CCleaner keeps reporting cleaning of browser while not in use

    By alejack12001,
    • 1 reply
    • 158 views

  13. CCleaner 4.75.8198 in Windows 10 Prof. 64-bi generates error messages

    By Rothirsch,
    • 1 reply
    • 146 views

  14. CCleaner not working

    By UmbertoFrancesco,
    • 12 replies
    • 346 views

  15. Software Unable to Complete "Make it better"

    By Paul2JPS,
    • 1 reply
    • 150 views

  16. Smart Cleaning UI display bug. (German language).

    By MSK_Linz,
    • 1 reply
    • 188 views

  17. CCleaner v.5.74 sometimes does not show its icon in the notification area

    By macchan,
    • 5 replies
    • 287 views

  18. Free version: "Select duplicates in" bug

    By Paul in NJ,
    • 1 reply
    • 129 views

  19. Can't disable "Minimize to System Tray"

    By johnywhy,
    • 5 replies
    • 311 views

  20. CCleaner breaks Firefox's service workers

    By XhmikosR,
    • 8 replies
    • 418 views

  21. CCleaner APPCRASH v5.74

    By k6whp,
    • 10 replies
    • 540 views

  22. ccleaner not responding properly to windows 10 version 20h2

    By ccronin45,
    • 1 reply
    • 187 views

  23. Font size very small and color light blue to grey, Very hard t read

    By TJP,
    • 6 replies
    • 259 views

  24. Possible app bug

    By hairynipples,
    • 1 reply
    • 172 views

  25. Cleaner 5.74.8198 Runs 'Smart Cleaning' Even Though I Unchecked 'Smart Cleaning'

    By JamesJ,
    • 14 replies
    • 612 views
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