I found Support | RDP session to W2K8 server dies when started from Windows 7 device with 11.1 or 11.2 agent where my problem should be solved in the patchlevel where I'm currently running on. It doesn't occurr all the time but some sessions to a 2008 R2 server still seem to crash when trying to connect like stated in TID 7009593. dll version = I'll update to today and test and report as well.

Problem Event Name: BEX64
Application Name: mstsc.exe
Application Version: 6.1.7601.17514
Application Timestamp: 4ce7ab44
Fault Module Name: ZenNotify.dll_unloaded
Fault Module Version:
Fault Module Timestamp: 50896da9
Exception Offset: 000000000506b11d
Exception Code: c0000005
Exception Data: 0000000000000008
OS Version: 6.1.7601.
Locale ID: 1043
Additional Information 1: d41d
Additional Information 2: d41d8cd98f00b204e9800998ecf8427e
Additional Information 3: 35a7
Additional Information 4: 35a72a16041bd469c8476ae360a5be03