在一部電腦上同時安裝一個或以上的防毒軟件會導致系統不穩定。當防毒軟件同時有即時防護功能(real time protection), 它們會嵌入系統中同時掃描檔案。請在安裝ESET產品前移除原有的防毒軟件。
在Windows 移除已安裝的防毒軟件程式的常用方法：
重要：移除現有的防毒時，請中斷網絡連線以免感染病毒。
在Windows 移除已安裝的防毒軟件程式的常用方法：
- 依序按一下 [開始]、[控制台]，再按兩下 [新增或移除程式]。
- 在 [目前安裝的程式] 方塊中，按一下您想移除的防毒軟件程式，再按一下 [移除]。
- 如果您收到確認移除程式的提示，請按一下 [是]。
如仍未能成功移除程式，請參考以下常見防毒軟件廠商的網址，你可以在那裡下載其移除工具。
A - B - C - D - E - F - G - K - L - M - N - P - Q - S - T - V - W
| Avast | http://www.avast.com/uninstall-utility |
| AVG | http://www.avg.com/us-en/utilities |
| Avira | http://www.avira.com/en/support-for-free-knowledgebase-detail/kbid/88 |
| CA Antivirus | see Total Defense Anti-Virus |
| Comodo Internet Security | https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=298 |
| CounterSpy | http://www.google.com/#q=counterspy+uninstall |
| Cyber Defender Early Detection Center | http://www.ustechsupport.com/faq.html#q4 |
| Dr. Web | https://support.drweb.com/support_wizard/?lng=en (Only registered Dr. Web users can access support content) |
| eScan | http://www.microworldsystems.com/download/tools/esremove.exe |
| ESET | /kb2788/ |
| Forefront Client Security | https://support.microsoft.com/en-in/help/2834133/the-removal-of-the-endpoint-protection-client-is-unsuccessful-for-fore |
| Forefront Endpoint Protection | https://technet.microsoft.com/en-us/library/gg477040.aspx |
| Forefront Server Security | https://support.microsoft.com/en-us/help/929081/how-to-install-or-uninstall-fse-or-fpe-on-an-exchange-ccr-cluster |
| FRISK F-PROT Antivirus for Windows | http://www.f-prot.com/support/windows/fpwin_faq/25.html |
| F-Secure |
ftp://ftp.f-secure.com/support/tools/uitool/UninstallationTool.zip |
| G Data | https://www.gdatasoftware.co.uk/?eID=PushFile&dl=f4b2f2fd23%3AAFEIBgU%3D |
| Kaspersky | http://support.kaspersky.com/common/service.aspx?el=1464 |
| K7 Total Security | https://apps.k7computing.com/Tools/dl/free-tools/K7RT.exe |
| LavaSoft | http://www.lavasoftsupport.com/index.php?showtopic=28 |
| Malwarebytes | http://www.malwarebytes.org/mbam-clean.exe |
| McAfee | http://download.mcafee.com/molbin/iss-loc/SupportTools/MCPR/MCPR.exe |
| Microsoft Diagnostics and Recovery Toolset (DaRT) | https://docs.microsoft.com/en-us/microsoft-desktop-optimization-pack/dart-v10/how-to-change-repair-or-remove-dart-10 |
| Microsoft Security Essentials | http://support.microsoft.com/kb/2435760 |
| Norman Virus Control/Norman Security Suite |
http://www.norman.com/home_and_small_office/help_support/removing_norman_security_suite |
| Norton (Symantec) | http://liveupdate.symantecliveupdate.com/upgrade/RnR/NRnR.exe |
| Norton Security Scan | Uninstall Norton Security Scan |
| Panda | http://www.pandasecurity.com/resources/sop/UNINSTALLER_08.exe |
| Panda Cloud Internet Protection | http://www.pandasecurity.com/resources/sop/Cloud_AV_Uninstaller.exe |
| Pareto Logic | http://www.paretologic.com/resources/help/xoftspyse/195.htm |
| Quick Heal | http://www.quickheal.com/prod-rem |
| Sophos | http://www.sophos.com/support/knowledgebase/article/11019.html |
| Spybot Search & Destroy | http://www.safer-networking.org/faq/how-to-uninstall-2/ |
| System Center Configuration Manager | https://technet.microsoft.com/en-us/library/bb694276.aspx |
| System Center Endpoint Protection | https://opbuildstorageprod.blob.core.windows.net/output-pdf-files/en-us/Win.sccm/live/protect.pdf |
| Total Defense Anti-Virus (formerly CA Anti-Virus) | https://support.totaldefense.com/hc/en-us/articles/228578648-How-To-Uninstall-Total-Defense-On-Windows- |
| Trend Micro Trend Micro Titanium |
https://esupport.trendmicro.com/en-us/home/pages/technical-support/1105809.aspx |
| Trend Micro Worry-Free Business Security Agent | https://success.trendmicro.com/solution/1056867-manually-uninstalling-the-security-agent-sa-in-worry-free-business-security-wfbs# |
| Vipre (Sunbelt Software) | http://kb.threattracksecurity.com/articles/SkyNet_Article/How-to-Uninstall-VIPRE-Antivirus-and-VIPRE-Internet-Security |
| Webroot | http://www.webroot.com/prodCheck/?pc=64150&origrc=1&oc=221&mjv=7&mnv=0&rel=6&bld=38&lang=en&loc=AUS&kc=ppc%60lkik^^afhgpewgfa&opi=2&omj=6&omn=1&osl=en&errid |
| Windows Defender | /kb2390/ |
| Windows Intune | https://gallery.technet.microsoft.com/Uninstall-the-Intune-b42111d1 |
| Windows Live OneCare | http://download.microsoft.com/download/4/c/b/4cb845e7-1076-437b-852a-7842a8ab13c8/OneCareCleanUp.exe |
| Windows Security Essentials | http://support.microsoft.com/kb/2435760 |
| Zone Alarm | https://support.zonealarm.com/hc/en-us/sections/115000477272-Removal-Uninstall |
重要：移除現有的防毒時，請中斷網絡連線以免感染病毒。