We are using virus scan enterprises 8.8 patch 4 in our environment.
We have removed VSE in Appwiz.cpl , installation folder and registry.But when we tried to install the setupvse.exe is unable to install.
We are getting the error message "set up unable to start because uninstallation not completed properly".Not sure the error message but more or less same error.
We have any uninstaller tool for VSE to delete some missing files on the client machine.
We have followed the Manually removal steps for VSE and after sometimes the installation start via from EPO server by that time the installation started and completed.
But manual installation is not started on the client machine.
Refer below KB article and I'll suggest to use command <path>\SETUPVSE.exe REINSTALLMODE=amus /q.
Open a case with McAfee and they can provide you tool like VSE cleaner or a ripper tool depend which one is your issue.
I have been working a few years in McAfee and they have those tools.