This document is intended for assisting those using Microsoft Security Essentials (MSE) on Windows XP, Windows Vista, and Windows 7. It is also used to assist users with Windows Defender (WD) on Windows 8 and Windows 10.
The tools provided by the links below are used at your risk. They are for informational use, and there is no assurance of accuracy or correctness. Read the instructions carefully on those manufacturer pages, as uninstalling may remove license/registration files or keys. If you intend to reinstall any of these products, you may need this information.
NOTE: Links with an *asterisk are direct downloads.
AppRemover now part of OESIS Endpoint Assessment Tool (which can scan for and remove multiple anti-malware products):
Use OESIS Endpoint Assessment Tool
Comodo Internet Security:
(help only) https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=298
Computer Associates / Total Defense:
ESET Home products:
Instructions to uninstall ESET Home products:
K7 Total Security
Microsoft Security Essentials:
Microsoft Windows Live OneCare:
http://support.microsoft.com/kb/930159(select method #2)
Norman Virus Control/Norman Security Suite
PC Tools ThreatFire:
Total Defense / Computer Associates:
*Windows Vista or Windows 7 (64-bit)
Trend Micro -http://esupport.trendmicro.com/solution/en-us/1056551.aspx
Trend Micro Titanium - http://esupport.trendmicro.com/solution/en-us/1056455.aspx
The following download is active as of 4 Nov, 2013, the document linked for -
"How do Irun the Verizon Internet Security Suite Uninstall Tool (RPSUU.exe)?"is no longer active.
This article appears to describe the tool - How do I use the Cleanup Tools to Uninstall Radialpoint Security Services?
Vipre (Sunbelt Software)
Revo Uninstaller Free Trial or Paid:
ESET AV Removal Tool
(Removes an extensive list of Antivirus software)
Special thanks to the following contributors to this article:
amir_sn, Arnaud1987, bhringer, Bronko5000, Corrine,dreamsburnred, Edwin333, Jeff_C, Kit Y, Kosh Vorlon, PA Bear MS MVP, SpiritX MS MVP, Hetti Arachchige V Aravinda, PrashantKumar96, Jeeped, Dr. Strangelove, Jsssssssss, and Monkey57