Yes all workstations have the same anti virus software and version installed - Webroot Secure Anywhere Endpoint Protection V9.0.30.75

I haven't tried the uninstall but will have to do a test run on one of the workstations in question to see if that does the trick. Will have to get their IT guys to uninstall one of the workstations in question so my result to post here could be a couple of days.

Thanks for the posts and will keep you posted.