What is w32time.dll?

W32time.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if w32time.dll is a Windows system file or if it belongs to an application that you can trust.

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W32time.dll file information

The process known as Windows Time Service or Servicio de hora de Windows or Us³uga Czas systemu Windows or Service de temps Windows

belongs to software Sistema operativo Microsoft Windows or Système d'exploitation Microsoft Windows or Besturingssysteem Microsoft Windows or Us³uga Czas systemu Windows (version (W32Time)) or Microsoft Windows Operating System

by Microsoft (

Description: W32time.dll is not essential for the Windows OS and causes relatively few problems. The w32time.dll file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 177,152 bytes (20% of all occurrences), 178,176 bytes, 282,624 bytes, 175,104 bytes or 176,128 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The w32time.dll file is not a Windows system file. W32time.dll is a trustworthy file from Microsoft. Therefore the technical security rating is 1% dangerous.

Recommended: Identify w32time.dll related errors

Important: Some malware disguises itself as w32time.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the w32time.dll 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.


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Best practices for resolving w32time issues

A clean and tidy computer is the key requirement for avoiding problems with w32time. 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.

To help you analyze the w32time.dll process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

w32time.dll [all]