The VIPRE Antivirus Engine will not update.

The following error is present inside the Ninja.Plugins.AntiVirus.Scanner logs: 
Error creating VIPRE® engine. Error: System.TypeLoadException: Could not Activate the Type specified where AssemblyName = Ninja.Plugins.Antivirus.Vipre

The following error is present inside the Application Event Logs
Source: SideBySide
Error: Activation context generation failed for "C:\Program Files (x86)\VIPRE Email Security\VipreManagedSdkTypes.dll". Dependent Assembly Microsoft.VC80.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="8.0.50727.4053" could not be found. 


  • VIPRE Email Security for Exchange Version or later
  • All Supported Environments


Run through the following to allow the VIPRE Engine to update:
  1. Run the appropriate C++ Package for the OS: (On 64-bit systems, run both)
  2. Restart VIPRE Email Security's Services (This will restart the Transport Service)
  3. Attempt the Update from inside VIPRE Email Security's Console

After this has been completed, the VIPRE Antivirus Engine should update successfully.


The C++ Redistributable libraries are missing or need to be updated.