I am trying to uninstall Webroot Antivirus so I can reinstall it & the uninstall fails every time due to error 100 also code 4365798SPSA. My computer keeps telling me the antivirus is not turned on & it won't let me turn it on. Best Buy told me to reinstall it. I can't reinstall if I can't uninstall

SOURCE: i am having the same

hi

your webroot spyware is clashing with some of the security update of windows.

before you install on any of the system just go to run
->msconfig ->startup->disable all->restart and then install the webroot.

I think its solved

SOURCE: installing a new antivirus program

if you know registry editor then go regedit find all webroot stuff and delete

SOURCE: Webroot - EIS Engine Failed

yes you do need to uninstall complete product..and make sure while you are instaling to have all other aplications closed!!!after that restart computer and no more worries.....

SOURCE: I am trying to uninstall webroot spysweeper with

Under normal circumstances, like any other Anti-Malware software, Webroot will protect itself. You cannot randomly shut down its service. You cannot use most external uninstallers.

Always try to uninstall it using Add & Remove Programs first (on XP) or Programs and Features (In Vista and 7), or the uninstall link in All Programs on your start menu.

If you are not able to find it in any of these places, get the official cleanup utility from Webroot directly at:

http://download.webroot.com/SSCCleanup.exe

This utility is made to cleanly shut down and clean up Webroot SpySweeper, Antivirus, and Internet Security Essentials and will even remove itself when it's done.