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What is wuauserv.dll?


Wuauserv.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 wuauserv.dll is a Windows system file or if it belongs to an application that you can trust.

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Wuauserv.dll file information

The process known as Windows Update AutoUpdate Service belongs to software Microsoft Windows Operating System by Microsoft (www.microsoft.com).

Description: Wuauserv.dll is not essential for the Windows OS and causes relatively few problems. Wuauserv.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 8/7/XP are 25,944 bytes (23% of all occurrences), 22,520 bytes and 5 more variants. http://www.file.net/process/wuauserv.dll.html 
The service can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. Wuauserv.dll is not a Windows core file. The file has a digital signature. wuauserv.dll appears to be a compressed file. Therefore the technical security rating is 19% dangerous.
If you experience any issues with installation of wuauserv.dll, you can also uninstall the associated program (Start > Control Panel > Add/Remove programs > Windows) or turn to the software developer, Microsoft, for advice.

Recommended: Identify wuauserv.dll related errors

If wuauserv.dll is located in a subfolder of "C:\Program Files", the security rating is 2% dangerous. The file size is 6,656 bytes. The program is not visible. The file is a trustworthy file from Microsoft. The file is not a Windows system file. wuauserv.dll appears to be a compressed file.

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

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

wuauserv.dll [all]