How to Uninstall Trend Micro OfficeScan Managed Antivirus 8.3?

“Had installed Trend Micro OfficeScan Managed Antivirus 8.3 earlier and uninstalled afterwards, but still cannot install other antivirus program which just prompts you to remove Trend Micro OfficeScan Managed Antivirus 8.3; The attached uninstall progress doesn’t work and also cannot find the Trend Micro OfficeScan Managed Antivirus 8.3 on Control Panel…”---By numerous PC users.

Have you ever met such similar difficulties while you are uninstalling Trend Micro OfficeScan Managed Antivirus 8.3? Trend Micro OfficeScan Managed Antivirus 8.3 is a well known antivirus program that has got a high reputation among many computer users, millions of broadband customer use its services to protect their computers from outside attackers. But due to some reasons, many people need to uninstall Trend Micro OfficeScan Managed Antivirus 8.3 from their computers, and the difficulty to totally uninstall Trend Micro OfficeScan Managed Antivirus 8.3 has made some people think that it is an impossible mission.

Free Download: Trend Micro OfficeScan Managed Antivirus 8.3 Uninstall!

(Tested Malware & Virus Free by McAfee™)

Why is it hard to uninstall Trend Micro OfficeScan Managed Antivirus 8.3

Like other antivirus programs such as Wireless Snif ,callas pdfaPilot Server ,SecureZIP ,MyWinLocker ,Rohos Mini Drive ,Rohos Disk Encryption ,Trend Micro OfficeScan Managed Antivirus 8.3 can’t be uninstalled easily and completely by the Windows Add/Remove Programs. You will definetly find that it would wast your much time to uninstall Trend Micro OfficeScan Managed Antivirus 8.3 manually. If you decide to uninstall Trend Micro OfficeScan Managed Antivirus 8.3 by asking the technicians in PC store, it is really not a good idea for you to spend the money for it. It is worthless! Let me tell you why it is so hard to uninstall Trend Micro OfficeScan Managed Antivirus 8.3. Two main reasons: 1. The original designer of Trend Micro OfficeScan Managed Antivirus 8.3 makes it so difficult to be uninstalled in order to ask their customer keep using the software on the PC. You know, almost every application publisher will has his own business purpose. 2. Most of the PC users are not good at computer skill. They can handle the simple problems but not including the registry issue. To uninstall Trend Micro OfficeScan Managed Antivirus 8.3 completely, you need to clean the leftover, related registry keys and registry entries of it, that is the most difficul part of uninstalling Trend Micro OfficeScan Managed Antivirus 8.3. If you delete the wrong folder in system disk or important registry list, you would make your PC system crash.

Why do you want to uninstall Trend Micro OfficeScan Managed Antivirus 8.3?

  • Trend Micro OfficeScan Managed Antivirus 8.3 makes your computer perform very slowly.
  • Trend Micro OfficeScan Managed Antivirus 8.3 has been expired on your PC.
  • Some of its essential files or processes are deleted by accident
  • It is not compatible with your computer system or some other programs
  • It occupies too much system space of your PC.
  • You want to use other antivirus programs then have to uninstall Trend Micro OfficeScan Managed Antivirus 8.3 at first.

Step by step to manually uninstall Trend Micro OfficeScan Managed Antivirus 8.3

Uninstall Trend Micro OfficeScan Managed Antivirus 8.3 by its attached uninstall program


  1. Go to the install folder of Trend Micro OfficeScan Managed Antivirus 8.3.
  2. Find out the uninstall process and activate it.
  3. Follow the prompt to finish the removing process.

Theoretically, the Trend Micro OfficeScan Managed Antivirus 8.3 removal could be achieved after finishing the last removing step, but the fact is just not the case, you still can find some stubborn files on it and not allow you to manually delete, which actually means the unsuccessful uninstallation.

Free Download: Uninstaller Trend Micro OfficeScan Managed Antivirus 8.3 Uninstall!

(Completely remove the Trend Micro OfficeScan Managed Antivirus 8.3)


Uninstall Trend Micro OfficeScan Managed Antivirus 8.3 by Windows Add/Remove Programs

1. Open Task Manager, stop Trend Micro OfficeScan Managed Antivirus 8.3 from running.

2. Click on the Start Menu button and then click on the Control Panel.

3. Click the Windows Add/Remove program.

4. A list of programs installed will be populated, this may take a bit of time.

5. In this list please find Trend Micro OfficeScan Managed Antivirus 8.3 and select it by left-clicking once on it.

6. Then click on the Uninstall button to start the uninstall process for Trend Micro OfficeScan Managed Antivirus 8.3. A wizard should then open, which will guide you through the rest of the uninstall.

Note: When finishing the above four steps, you still need to do an additional job so that the complete removal can be achieve, that is to manually clean out those stubborn leftovers which include its install files and registry entries. But not all the users has the ability to fulfill the final manual removal process, because it is a high risky job do any modification in the Registry Editor which is a crucial part for the computer system, any removal error for those registry entries will probably cause the blue screen error or permanent system crash.

Tips: To uninstall Trend Micro OfficeScan Managed Antivirus 8.3 compeltely, you still need to delete the related registry entries carfully.


We provide you with the guides but it is not recommended.

Go to registry editor to get rid of Trend Micro OfficeScan Managed Antivirus 8.3 registry keys and values:
(HKEY_CURRENT_USER\Software\Trend Micro OfficeScan Managed Antivirus 8.3)
(HKEY_LOCAL_MACHINE\Software\Trend Micro OfficeScan Managed Antivirus 8.3)
(HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\eg ui)

Click on the START menu again and get in the Control Panel and then Folder Options then View and choose Show Hidden Files and Folders, delete the following folders:

(C:\Program Files\Trend Micro OfficeScan Managed Antivirus 8.3 )
(C:\Document and Settings\All Users\Application Data\Trend Micro OfficeScan Managed Antivirus 8.3)
(C:\Documents and Settings\%USER%\Application Data\Trend Micro OfficeScan Managed Antivirus 8.3)


Trend Micro OfficeScan Managed Antivirus 8.3 Registry Details
HKEY_CLASSES_ROOT\CLSID\{F4F5B989-1ACC-438A-BFC9-DA15FCC49CB4} HKEY_CLASSES_ROOT\picasa HKEY_CLASSES_ROOT\ Trend Micro OfficeScan Managed Antivirus 8.3 \shell HKEY_CLASSES_ROOT\Trend Micro OfficeScan Managed Antivirus 8.3\shell\open HKEY_CLASSES_ROOT\Trend Micro OfficeScan Managed Antivirus 8.3\shell\open\command HKEY_CLASSES_ROOT\Trend Micro OfficeScan Managed Antivirus 8.3.autoplay HKEY_CLASSES_ROOT\ Trend Micro OfficeScan Managed Antivirus 8.3.autoplay\shell HKEY_CLASSES_ROOT\ Trend Micro OfficeScan Managed Antivirus 8.3.autoplay\shell\import HKEY_CLASSES_ROOT\ Trend Micro OfficeScan Managed Antivirus 8.3.autoplay\shell\import\command HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3 HKEY_CLASSES_ROOT\Trend Micro OfficeScan Managed Antivirus 8.3\url protocol HKEY_CLASSES_ROOT\Trend Micro OfficeScan Managed Antivirus 8.3.autoplay\defaulticon HKEY_CURRENT_USER\Software\google\Trend Micro OfficeScan Managed Antivirus 8.3\Trend Micro OfficeScan Managed Antivirus 8.3 \runtime\apppath HKEY_CURRENT_USER\Software\Microsoft\internet explorer\main\default_search_url HKEY_CURRENT_USER\Software\Microsoft\internet explorer\main\search bar HKEY_CURRENT_USER\Software\Microsoft\internet explorer\main\search page HKEY_CURRENT_USER\Software\Microsoft\internet explorer\search\default_search_url HKEY_CURRENT_USER\Software\Microsoft\internet explorer\search\searchassistant HKEY_CURRENT_USER\Software\Microsoft\internet explorer\searchurl\provider HKEY_CURRENT_USER\Software\Microsoft\search assistant\defaultsearchurl HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\eventhandlersdefaultselection\showpicturesonarrival HKEY_LOCAL_MACHINE\Software\Microsoft\internet explorer\version vector\ Trend Micro OfficeScan Managed Antivirus 8.3HKEY_LOCAL_MACHINE\Software\Microsoft\Windows nt\CurrentVersion\prefetcher\lasttracefailure HKEY_LOCAL_MACHINE\Software\Microsoft\Windows nt\CurrentVersion\prefetcher\tracesprocessed HKEY_LOCAL_MACHINE\Software\Microsoft\Windows nt\CurrentVersion\prefetcher\tracessuccessful HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival\action HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival\defaulticon HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival\invokeprogid HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival\invokeverb HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\autoplayhandlers\handlers\Trend Micro OfficeScan Managed Antivirus 8.3importpicturesonarrival\provider HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\DisplayName HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\DisplayVersion HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\HelpLink HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\InstallLocation HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\Publisher HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\UninstallString HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\URLInfoAbout HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\VersionMajor HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Trend Micro OfficeScan Managed Antivirus 8.3\VersionMinor

Uninstall errors you may encounter

Sometimes, you may encounter some error messages during the uninstalling procession. It means some of the files of this application are missing or you don't have the permission to uninstall it manually.




In this case, you should use some third party uninstall tools to force uninstall programs you don't need any more. You can avoid such uninstall error message and finish the removal powerfully.

Uninstall Trend Micro OfficeScan Managed Antivirus 8.3 with Mighty Uninstaller

Step1: Free Download Trend Micro OfficeScan Managed Antivirus 8.3 Uninstaller, install and run it.

Step2: Select the program you want to uninstall and click the “Uninstall” button.

Step3: Follow the uninstall wizard to completely uninstall the program.

Moreover, you can force uninstall Trend Micro OfficeScan Managed Antivirus 8.3 or any other programs with this function of Mighty Uninstaller


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