The genuine MSPCLOCK.sys file is a software component of Microsoft Windows Operating System by Microsoft.
A driver for audio synchronization, this MSPCLOCK.sys starts with Windows and runs as a background process. This file is only available for Windows XP. Failure of this file to properly load will result in errors playing back audio. Errors include timing issues as well as total failure of audio to play.

MSPClock stands for Microsoft Streaming Proxy Clock

MSPCLOCK.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if MSPCLOCK.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for MSPCLOCK drivers in need of updating

MSPCLOCK.sys file information

The process known as MS Proxy Clock belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original MSPCLOCK.sys is an important part of Windows and rarely causes problems. The MSPCLOCK.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 5,376 bytes (66% of all occurrences) or 5,120 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The MSPCLOCK.sys file is a Windows core system file. The software is not active. The program has no visible window. There is no detailed description of this service. MSPCLOCK.sys appears to be a compressed file. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Recommended: Identify MSPCLOCK.sys related errors

Important: Some malware disguises itself as MSPCLOCK.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the MSPCLOCK.sys 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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windows wants to run it on each computer start
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Best practices for resolving MSPCLOCK issues

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

MSPCLOCK.sys [all]