How to remove the extsetup virus

Most antivirus programs identify extsetup.exe as malware—such as Avast identifies it as Win32:Dropper-gen [Drp], and TrendMicro identifies it as TROJ_GEN.R00UC0OE215 or Ransom_Onion.R011C0EG416.

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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Extsetup.exe file information

The process extsetup.exe contains no information about the creator.

Description: Extsetup.exe is not essential for Windows and will often cause problems. The extsetup.exe file is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 453,835 bytes (11% of all occurrences), 439,057 bytes and 15 more variants. 
There is no information about the author of the file. It is not a Windows core file. The application starts upon Windows startup (see Registry key: RunOnce, Run, MACHINE\User Shell Folders, User Shell Folders). Therefore the technical security rating is 68% dangerous.

Recommended: Identify extsetup.exe related errors

If extsetup.exe is located in a subfolder of "C:\Program Files", the security rating is 79% dangerous. The file size is 317,785 bytes (50% of all occurrences), 448,731 bytes or 396,872 bytes. The program has no file description. The file is not a Windows system file.

Important: You should check the extsetup.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 extsetup issues

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

extsetup.exe [all]