Security Task Manager
fast.exe process file

What is fast.exe? Is fast.exe spyware or a virus?
Process name: Super Fast User Switcher

Product: Microsoft® Windows® Operating System

Company: Microsoft Corporation (

File: fast.exe

If you want a detailed security rating about your fast.exe (and all other running background processes) download the free trial version of Security Task Manager.

Note: Any malware can be named anything - so you should check where the files of the running processes are located on your disk. If a "non-Microsoft" .exe file is located in the C:\Windows or C:\Windows\System32 folder, then there is a high risk for a virus, spyware, trojan or worm infection! Check it out!

Users Opinions

80 users ask for this file. 1 user rated it as not dangerous.

All comments about fast.exe:
Frits boelema fast.exe is a part of the Windows XP PowerToys. It gives users the possibility for a user to switch from one user account to another with a single click. This program is a non-essential system process, and is installed for ease of use.
Your opinion:
What do you know
about this file:
Link for more details:
Your Name:

More process information
Is fast.exe spyware or a virus, trojans, adware or worm? Is there a known fast.exe error?
Read more about fast.exe on

Other Processes

wbload.exe khost.exe tcpsvcs.exe fast.exe bdss.exe smiehlp.dll usrprmpt.exe epson web-to-page.dll locator.exe nvsc32.exe iaantmon.exe [all processes]
Security Task Manager

An enhanced process viewer, that displays all the standard information as well as a unique security risk rating based on analysis of hidden functions (keylogging, stealth, browser surveillance, autorun entry,...)

Prozess Viewer and Task-Manager for more security
Click image to see more screenshots

  Free download

  Buy now


ZDNet Redaktion:    
PC Welt:
Yahoo! Top 10