No VPN traffic passes through a VPN client in Windows 8.1 or Windows Server 2012 R2

Windows Server 2012 R2 Datacenter Windows Server 2012 R2 Standard Windows Server 2012 R2 Essentials Windows Server 2012 R2 Foundation Windows 8.1 Enterprise Windows 8.1 Pro Windows 8.1 Windows RT 8.1 More...Less

Symptoms

This issue occurs when multiple virtual private network (VPN) software applications are installed on a computer that works as a VPN client. 

Resolution

To fix this issue, install May 2016 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about the terminology that Microsoft uses to describe software updates.