How to remove the Microsoft virus

Most antivirus programs identify Microsoft.exe as malware—e.g. F-Secure identifies it as Gen:Variant.Kazy.138257 or Gen:Variant.Barys.8346, and McAfee identifies it as Artemis!5D81DFEA178B.

The Microsoft.exe file is a software component of Win32.downloader.gen.
Win32.downloader.gen is the generic name for Trojans found by leading anti-virus scanners. Microsoft.exe is often created by the Trojan often to mislead users into believing it is a genuine process.

This program often spreads through unsecured Internet connections and infects unprotected computers. It may have been downloaded through spam email, a download from a compromised website, or through peer-to-peer file sharing software. This infection should be quarantined or removed by a dedicated anti-virus or anti-malware program.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the Microsoft.exe malware

Microsoft.exe file information

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

The process known as winss or Client or Microsoft Update Client or li.exe or Services and Controller app appears to belong to software winss or Client or Microsoft Update Client by Incomedia s.r.l or winss or Microsoft Update Client.

Description: Microsoft.exe is not essential for Windows and will often cause problems. The file Microsoft.exe is located in a subfolder of the user's profile folder (usually C:\Users\USERNAME\AppData\Roaming\). Known file sizes on Windows 10/8/7/XP are 99,328 bytes (25% of all occurrences), 24,064 bytes, 279,072 bytes or 73,216 bytes. 
There is no file information. The process starts when Windows starts (see Registry key: Run, MACHINE\Run). Microsoft.exe is not a Windows system file. The program has no visible window. Microsoft.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 72% dangerous, but you should also take into account the user reviews.

Recommended: Identify Microsoft.exe related errors

External information from Paul Collins:
There are different files with the same name:

Important: You should check the Microsoft.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

Probably a malware variant
  Bob Cudmore   (further information)
This process is most likely a virus or trojan.
It is a virus that make your computer slow
hide flash disk files and folders, can be deleted but comes back in 2 seconds.
There is a Ransomware mimicking failed windows updates, file name Microsoft.exe located in C:\Windows.
  JC   (further information)
But after removing this virus, Device Manger, Administrative Tools and many more thing not works

Rating chart

Summary: Average user rating of Microsoft.exe: based on 11 votes with 6 user comments. 2 users think Microsoft.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. 3 users suspect danger. 4 users think Microsoft.exe is dangerous and recommend removing it. One user is not sure about it.

Do you have additional information?

Best practices for resolving Microsoft issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active Microsoft process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the Microsoft.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

Microsoft.exe [all]