How to remove the FastUserSwitchingCompatibilityex virus

Most antivirus programs identify FastUserSwitchingCompatibilityex.dll as malware—e.g. BitDefender identifies it as Gen:Trojan.Heur.LP.eu5@aK9D2Dk, and Kaspersky identifies it as Trojan-Spy.Win32.Agent.bpuq or Trojan-Spy.Win32.Agent.bhls.

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.

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FastUserSwitchingCompatibilityex.dll file information

At the present time, we have no confirmed details about the software with which MicroSoft NetBIOS Utility (FastUserSwitchingCompatibility) or MicroSoft License Service (FastUserSwitchingCompatibility) or MicroSoft Security Management (FastUserSwitchingCompatibility) or MicroSoft Team Manager (FastUserSwitchingCompatibility) is associated.

Description: FastUserSwitchingCompatibilityex.dll is not essential for Windows and will often cause problems. FastUserSwitchingCompatibilityex.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 73,748 bytes (71% of all occurrences) or 73,728 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs. There is no file information. The program is not visible. The FastUserSwitchingCompatibilityex.dll file is not a Windows system file. FastUserSwitchingCompatibilityex.dll is able to monitor applications and manipulate other programs. FastUserSwitchingCompatibilityex.dll appears to be a compressed file. Therefore the technical security rating is 40% dangerous.

Recommended: Identify FastUserSwitchingCompatibilityex.dll related errors

Important: You should check the FastUserSwitchingCompatibilityex.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 FastUserSwitchingCompatibilityex issues

The following programs have also been shown useful for a deeper analysis: ASecurity Task Manager examines the active FastUserSwitchingCompatibilityex process on your computer and clearly tells you what it is doing. Malwarebytes' well-known Banti-malware tool tells you if the FastUserSwitchingCompatibilityex.dll 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

FastUserSwitchingCompatibilityex.dll [all]