What is TPOSDSVC.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the TPOSDSVC.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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TPOSDSVC.exe file information

Windows Task Manager with TPOSDSVC
TPOSDSVC.exe process in Windows Task Manager

The process known as On screen display message generator for ThinkPad or On screen display message handler belongs to software On screen display or On Screen Display by Lenovo Group ( or Lenovo (Japan) (

Description: TPOSDSVC.exe is not essential for Windows and will often cause problems. TPOSDSVC.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 8/7/XP are 66,176 bytes (28% of all occurrences), 69,568 bytes and 6 more variants. 
The TPOSDSVC.exe file is a Verisign signed file. TPOSDSVC.exe is digitally signed. It is not a Windows core file. The program has no visible window. The software starts upon Windows startup (see Registry key: MACHINE\Run). Therefore the technical security rating is 28% dangerous, however you should also read the user reviews.
If there are any problems with TPOSDSVC.exe, you can also uninstall On Screen Display or Anzeige am Bildschirm software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 8/7/Vista).

Recommended: Identify TPOSDSVC.exe related errors

If TPOSDSVC.exe is located in the C:\Windows folder, the security rating is 80% dangerous. The file size is 43,008 bytes. The process has no file description. The TPOSDSVC.exe file is located in the Windows folder, but it is not a Windows core file. The program has no visible window. The process is loaded during the Windows boot process (see Registry key: MACHINE\Run). The file is not a Windows core file.

Important: Some malware also uses the file name TPOSDSVC.exe, for example TROJ_GEN.FC4EZFJ or TROJ_UNRUY.SMS (detected by TrendMicro), and TrojanDownloader:Win32/Unruy.C (detected by Microsoft). Therefore, you should check the TPOSDSVC.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Lenovo hotkey utility
Driver that allows the hotkeys working correctly on Lenovo.

Summary: Average user rating of TPOSDSVC.exe: based on 1 vote with 2 user comments. One user thinks it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving TPOSDSVC issues

A clean and tidy computer is the key requirement for avoiding problems with TPOSDSVC. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the TPOSDSVC.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

TPOSDSVC.exe [all]