Lansweeper claims All workstations are without Anti-virus software.

GFI Acqquired Vipre. 

In some version ( I do not know which) they renamed the agent from "VIPRE" something to "GFI Business Agent"

The service continues to be named " Vipre Business Premium "

I solved this for Vipre version 6.2.5 by Adding  %GFI Business Agent% to the list of Anti-Virus Software name.

After Installiing VIPRE 4.0  Enterprise, Cisco VPN connection does not work.
The  VPN connection can be made (to firewall). but no  traffic was allowed thru VPN Tunnel.

To resolve this  Open the control panel and Open network connections. Right click on the Local Area Connection 2 or similar that it for  "Cisco System VPN Adapter" and click properties
In here uncheck the "Sunbelt Software Firewall NDIS IM filter"  Then click apply. You may reenable Firewall in VIPRE after this. 
 

GFI mailessentials Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

I was getting this message when I tried to view the details of a message in the spam quarantine.
Turns out that the account ASPnet did not have permissions on the quarantine folder.