Manually uninstall Trend Micro Office Scan Client

Sometimes you cannot uninstall the Office Scan Client so here is the way to uninstall it manually.

1.Go to Control Panel Services (services.msc), and stop the following services:
◦OfficeScanNT Listener
◦OfficeScanNT RealTimeScan
◦OfficeScanNT Personal Firewall (if enabled)

2.Run Registry Editor (regedit.exe)

3.Navigate to the following registry key hive:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

4.Delete the following keys (if available):
◦Ntrtscan
◦Tmlisten
◦TmFilter
◦VSApiNt
◦TMPreFilter
◦TM_CFW
◦OfcPfwSvc

5.Navigate to the following registry hive:
HKEY_LOCAL_MACHINE \SOFTWARE\TrendMicro

or

HKEY_LOCAL_MACHINE \SOFTWARE \Wow6432Node\TrendMicro (in 64-bit Windows operating system)

6.Delete the following keys (if available):
◦OfcWatchDog
◦Pc-cillinNTCorp or OfficeScanCorp (depending on the client)
◦RemoteAgent
◦PC-cillin
◦CFW

7.Browse to the following registry key hive:
HKEY_LOCAL_MACHINE \SOFTWARE \Microsoft\Windows\CurrentVersion\Run

8.Delete the OfficeScanNT Monitor key.

9.Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

10.Delete the OfficeScanNT key.

11.Delete the OfficeScan program group (Trend Micro OfficeScan Client) from the Windows Start menu.

12.Restart the computer.

13.Delete the directories that contain the OfficeScan Client program files, normally located inside Program Files folder.