What is Mahjong.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 Mahjong.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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Mahjong.exe file information

Windows Task Manager with Mahjong
Mahjong.exe process in Windows Task Manager

The process known as Microsoft Mahjong or Mahjongg belongs to software Microsoft Mahjong or Mahjongg by Microsoft Studios.

Description: Mahjong.exe is not essential for the Windows OS and causes relatively few problems. The file Mahjong.exe is located in a subfolder of "C:\Program Files" (in most cases C:\Program Files\WindowsApps\Microsoft.MicrosoftMahjong_2.5.1508.1801_x86__8wekyb3d8bbwe\). Known file sizes on Windows 10/8/7/XP are 546,816 bytes (20% of all occurrences), 562,688 bytes, 556,032 bytes, 403,456 bytes or 559,616 bytes. 
There is no information about the author of the file. The program is not visible. Mahjong.exe is not a Windows system file. Therefore the technical security rating is 50% dangerous.

Uninstalling this variant: If problems with Mahjong.exe come up, you can safely remove the program using the uninstall program of Microsoft Mahjong (Control Panel ⇒ Uninstall a Program).

Recommended: Identify Mahjong.exe related errors

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


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Best practices for resolving Mahjong issues

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

Mahjong.exe [all]