34 Responses to “Defeating a Trend Micro PC-Cillin uninstall password”

1. # midas on October 17th, 2007 6:59 PM

   also you can use pcctool.exe for 2007 and older or tissprt.exe (or similar name) for 2008
   the force uninstall feature requires no password but of course requires admin priveleges
   usually is found in the install directory

2. # DjLizard on October 17th, 2007 7:03 PM

   Excellent! Thanks for the tip!

3. # Isaac on October 18th, 2007 12:18 AM

   Related note: I've run into Norton/Symantec uninstall processes that ask for a password to proceed. Tried 'symantec' and it worked :-)

4. # ®®® on October 20th, 2007 9:13 PM

   When the default password "symantec" isn't working or you have the Symantec Corporate AntiVirus Edition set the value useVPuninstallpassword from 1 to 0 found in:
   HKLM\SOFTWARE\INTEL\LANDesk\VirusProtect6\CurrentVersion\Administrator Only\Security\

   This made me succesfully uninstall the crapware without beeing asked for a password on the work laptop of my wife.

   Kudos to "churdoo" (IT Consultant from New London, Connecticut) who posted this over @ TechRepublic.com

5. # Cardinal Fang on February 21st, 2008 7:30 PM

   Thanks …

6. # Cozmo on March 21st, 2008 3:33 AM

   Great to learn there are tools to remove pc-cillin software. I have used tools to remove mcafee before but did not know there were others available.
   The symantec tip is especially useful.
   Thanks

7. # Dan LaMoreaux on May 20th, 2008 12:58 PM

   Simply change the value of HKLM_SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc.\AllowUninstall from 0 to 1

8. # Ewan McLean on June 20th, 2008 4:00 AM

   Worked great, thank you!

9. # Vikas on June 29th, 2008 2:32 AM

   Thanks. I was looking for this all over the Internet. :)

10. # Rafaga on July 1st, 2008 2:22 PM

    Thanks!

    I wasn't able to find the pcctool.exe and tissprt.exe in the installation folder however by changing the value of AllowUninstall from 0 to 1, it removed the program right away!!!

    Thanks!

11. # keri on September 26th, 2008 6:50 PM

    that was amazing. i changed to a 1 and it worked! thank you!

12. # JWeavis on September 27th, 2008 9:25 AM

    Thanks. Had to remove v12 from someone's laptop.

13. # bogan on October 5th, 2008 1:54 AM

    thanks 4 the help. now my security can work properly

14. # Terri on October 9th, 2008 3:33 PM

    I don't want to uninstall it but I just forgot my password… And I just want to know how to reset my password without uninstalling it. Any help?

15. # manoj kumar on October 14th, 2008 2:30 AM

    password is set in tne antivirus software installed in my laptop and i wish to remove the software

16. # gunjan on December 24th, 2008 1:06 PM

    hey guys jus chnage the value 0 to 1 it will damnn work!!!!

17. # Wiigi on December 26th, 2008 7:51 PM

    Thanks! This worked great!

18. # GambitMaster66 on January 10th, 2009 2:19 AM

    Manually Uninstall Trend Micro Internet Security Pro and Trend Micro Internet Security 2008 with TISSuprt.exe

    Close the main console for Trend Micro Internet Security if it’s opened.
    Open Windows Explorer and navigate to the following folder:
    C:\Program Files\Trend Micro\Internet Security\

    Note that change the drive letter if Trend Micro is installed at another partition accordingly.

    Double-click to run the TISSuprt.exe file, which has a red and white lifesaver icon.
    The Trend Micro Diagnostic Toolkit window will appear. Click on the Uninstall tab.

    Click on the Uninstall button.
    Click on the UnInstall button again when asked if you want to continue with the uninstallation.

    Note: If a message appears asking you to delete quarantined files, click Yes to proceed with the uninstallation.

    A message appears when the uninstallation is complete. Click Yes to restart your computer.

19. # tatiana on January 27th, 2009 10:33 AM

    Holas gracias por tu tip, pero estoy en la carpeta PC-CILLING y no encuentro ese sistema de sub clave, System sub-key, plis me puedes ayudar kiza tiene otro nombre. Los que veo en la carpet Pc-cilling son archivo s de nombres: name, PID, PRODUCTCODE y otros tambien hay una carpeta de nombre 16 dentro de esta esta debuglog, kiza es eso, alli hay archivos de nombre logextension, logfile,etc. PORFAVOR TE AGRADECERE MUCHO.

    SALUDOS.

20. # tatiana on January 27th, 2009 10:36 AM

    sorry for writing in Spanish.

21. # claryce on February 17th, 2009 12:14 AM

    THANKS DAN!

    Simply change the value of HKLM_SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc.\AllowUninstall from 0 to 1

    thank you thank you!

22. # how do i on February 23rd, 2009 1:54 PM

    how do i go into the thing and change the valu to 0 i surched for HKEY_LOCAL_MACHINE\Software\Trend Micro\PC-Cillin but it says its not a valid folder can someone help me im only 12 plz help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

23. # Ken on March 12th, 2009 10:05 AM

    THANK YOU!! Renaming the sub directory worked perfect.

    1. Start RegEdit
    2. Browse to HKEY_LOCAL_MACHINE\Software\Trend Micro\PC-Cillin
    3. Rename key (I had version 14, so in my case I renamed it to a14)
    4. Go into Control Panel and then run the uninstaller from Add/Remove Programs

24. # Buck on April 16th, 2009 10:11 AM

    Thanks

    HKLM_SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc.\AllowUninstall from 0 to 1

    Worked for me with TM Corp edition

25. # margx on June 5th, 2009 2:13 AM

    hi..where will i type this; HKLM_SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc.\AllowUninstall

    please help..tnx

26. # Brian on June 9th, 2009 11:40 PM

    Simply change the value of HKLM_SOFTWARE\TrendMicro\PC-cillinNTCorp\CurrentVersion\Misc.\AllowUninstall from 0 to 1

    This worked perfectly, I am albe to script this and make the change to several computers.

    Thanks again

27. # John on July 2nd, 2009 11:50 AM

    Does anyone know how to do this for version 12? 12.7 to be exact.

28. # poker on August 3rd, 2009 11:25 AM

    You are right it is that easy, thank you for the tip, works awesome.

29. # Karen on August 22nd, 2009 12:22 AM

    Thanks, that was a great help. Have a nice day!

30. # Vaxx on September 10th, 2009 1:40 AM

    WOW!! This is great stuff.
    thanks a lot!!

31. # Mike on September 21st, 2009 9:08 AM

    This worked like a charm… thank you!!!

32. # Russ on October 25th, 2009 7:08 PM

    I wanted to uninstall Trend Micro from a laptop which nobody had the password for, I successfully uninstalled Trend with the help from Dan LaMoreaux posted instruction on May 20th, 2008 12:58 PM.

    Thanks Dan!

33. # Shawn on December 7th, 2009 1:23 PM

    I had this problem recently. Our offsite guy who installed it would not tell me the password (I figure it must be something really nutty) even though he does not work for us and does not own our computers. The laptop would not start except in safe mode w/o networking. I had tried many suggestions that I found, but for whatever reason, none of them worked. I downloaded a thing called the revo uninstaller from download.com. The revo uninstaller does not care about passwords and wiped out every little bit of TM.

34. # Bernhard on December 16th, 2009 7:35 PM

    Man – I doen't know how to say "THANK YOU" !

Leave a Reply