How to remove the w32tm virus

Most antivirus programs identify w32tm.exe as malware—e.g. Kaspersky identifies it as Packed.Win32.Black.a, and Microsoft identifies it as Backdoor:Win32/Sdbot.gen!A.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the w32tm.exe malware

W32tm.exe file information

The process known as Windows Time Service Diagnostic Tool belongs to software Microsoft Windows Operating System by Microsoft (

Description: W32tm.exe is not essential for Windows and will often cause problems. The w32tm.exe file is located in the C:\Windows folder. The file size on Windows 10/8/7/XP is 1,096,192 bytes. 
There is no description of the program. The program is not visible. W32tm.exe is located in the Windows folder, but it is not a Windows core file. The w32tm.exe file is not a Windows system file. The software uses ports to connect to or from a LAN or the Internet. Therefore the technical security rating is 85% dangerous, however you should also read the user reviews.

Recommended: Identify w32tm.exe related errors

If w32tm.exe is located in the C:\Windows\System32 folder, the security rating is 2% dangerous. The file size is 66,048 bytes. W32tm.exe is a Windows system file. It is a Microsoft signed file. The program has no visible window.

External information from Paul Collins:

Important: You should check the w32tm.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

Ist ein Teil von einem Backdoor. Informationssite 2 :
  G. Effertz   (further information)
w32tm.exe is part of Windows and is used to configure Windows Time service settings. It can also be used to diagnose problems with the time service. W32tm.exe is the preferred command line tool for configuring, monitoring, or troubleshooting the Windows Time service.
A copy was present in C:\Users\ username \AppData\Local\Temp\ with a file size of 620.527 bytes. It was not recognized on 21-3-2012 by MS Security Essentials not by AVG Free as dangerous. However, Trojan:Win32/Aluron.FE and Torjan:Win32/FakeSysdef were detected. w32tm.exe caught my attention, because it was repeatedly asking for permission to write to the file system.
  R. S.  

Summary: Average user rating of w32tm.exe: based on 3 votes with 3 user comments. 2 users think w32tm.exe is essential for Windows or an installed application. One user thinks w32tm.exe is dangerous and recommends removing it. One user is not sure about it.

Do you have additional information? Help other users!
What do you know about w32tm.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving w32tm issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active w32tm process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the w32tm.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

w32tm.exe [all]