What is mssysmgr.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 mssysmgr.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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Mssysmgr.exe file information

Windows Task Manager with mssysmgr
Mssysmgr.exe process in Windows Task Manager

The process known as Nero PhotoShow Media Manager or Walgreens PhotoShow Media Manager or Comcast PhotoShow Media Manager belongs to software Nero PhotoShow Express or Comcast PhotoShow Deluxe (version 4) or Walgreens PhotoShow Express (version 4) by Simple Star ( or Ahead Software (

Description: Mssysmgr.exe is not essential for the Windows OS and causes relatively few problems. Mssysmgr.exe is located in a subfolder of "C:\Program Files (x86)"—mostly C:\Program Files (x86)\Ahead\Nero PhotoShow\data\Xtras\ or C:\Program Files (x86)\Ahead\Ahead\data\Xtras\. Known file sizes on Windows 10/8/7/XP are 196,608 bytes (46% of all occurrences), 212,992 bytes and 5 more variants. 
The file is not a Windows core file. The program is not visible. The software is loaded during the Windows boot process (see Registry key: Run). Therefore the technical security rating is 54% dangerous; but you should also compare this rating with the user reviews.

Uninstalling this variant: The software vendor offers the option to do the following:
  • turn to the software developer, Simplestar, for advice
  • uninstall the software Nero PhotoShow Express or PhotoShow Deluxe 3 using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program)

Recommended: Identify mssysmgr.exe related errors

Important: Some malware camouflages itself as mssysmgr.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the mssysmgr.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

Part of the Nero software suite
It is unstable on my Win98SE OS. Came in Comcast Photo Whatever
Came with Walgreen's Photo CD - freezes Win 98 os
  Pat Hayes  
Nero Photoshow Express File. Annoying, but easily shut down
Its part of Walgreens photo program. comes when you order a photo CD and download a photo. Automatically installs it without any asking.
  Lee Alsup  
Auto startup not required. To disable uncheck - Start - Run - MSCONFIG - Startup - unCheck as needed
Triggers repeated disk C: re-writes at start, stops Norton Disk Doctor from finishing
it is part of Comcast Photoshow Deluxe
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of mssysmgr.exe: based on 20 votes with 9 reviews. 11 users think mssysmgr.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 4 users think it's neither essential nor dangerous. 4 users suspect danger. 5 users don't grade mssysmgr.exe ("not sure about it").

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Best practices for resolving mssysmgr issues

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

mssysmgr.exe [all]