By 
If you decide to completely remove CA eTrust Antivirus from your computer and switch to Kapersky, McAfee, or one of the other more useful programs, then I’ll tell you the truth. You can’t count on Windows’ built-in “Add / Remove Programs”, the normal way to uninstall unwanted programs. Because after this uninstallation, in the process of downloading the other antivirus, you may receive a message indicating that the system cannot operate all the components (for example, virus scan, antispam, etc.) while other eTrust programs still They are running.
So how can you completely remove this stubborn CA eTrust Antivirus? Please read this article and I will tell you how:
One, a manual removal
After uninstalling this program in “Add or Remove Programs”, remove all the following items if they still exist:
Step 1
Go to Start – Control Panel – System – Hardware – Device Manager – View – Show Hidden Devices – Non Plug and Play Drivers, there may still be a number of VET_____ components there. They can appear lowered or dimmed (ghosts), and then erase each of them. There may also be one or two orphan Services in the current Control Set in the Registry (also called VET_____).
Step 2
Go to Start – Run, type: unvet32.exe and delete the following:
* C: Windows AVShlExt.dll
* C: Windows System32 ISafeIf.dll
* C: Windows System32 iSafProd.dll
* C: Windows System32 VetRedir.dll
* C: Windows System32 Drivers VetEBoot.sys
* C: Windows System32 Drivers VetEFile.sys
* C: Windows System32 Drivers VetFDDNT.sys
* C: Windows System32 Drivers Vet-Filt.sys
* C: Windows System32 Drivers VetMonNT.sys
* C: Windows System32 Drivers Vet-Rec.sys
* C: Program Files CA eTrust EZ Armor eTrust EZ Antivirus
* The program group of the EZAV start menu located in Start-> All Programs
* In the registry:
HKEY_LOCAL_MACHINE SOFTWARE ComputerAssociates Anti-Virus
Step 3 Go to the registry editor: Start – Run and type regedit.
Under the key
HKEY_LOCAL_MACHINE SYSTEM CURRENTCONTROLSET SERVIC ES
Delete the following keys
* VETEBOOT
* VETEFILE
* VETFDDNT
* VET-FILT
* VETMONNT
* VETMSGNT
* VET-REC
Under the key
HKEY_LOCAL_MACHINE SOFTWARE MICROSOFT WINDOWS CURR ENTVERSION UNINSTALL
Delete the following key
* VETWIN32Vp5
Step 4 Restart your computer.
If you had to manually delete any files, run UnVet32.exe again to see what it shows. If it displays a successful message, it will delete itself, so it will be completely deleted.
However, you should do this at your own risk, as any mistakes can cause errors on your computer. So be careful and double check before removing anything.
Two, an automaton removal
Using an automatic removal tool is a much easier and safer resolution. A good uninstaller can help you completely get rid of CA eTrust Antivirus in seconds, with no hassle.