Hi,
At a customer I am having very weird problem with TMG 2010 SP2 running on Windows Server 2008 R2 running as a Virtual Machine on Hyper-V (Windows Server 2012). I have tried everything you can imagine.
I am not going into detail about the issue. But I need to know wether Path MTU Discovery is enabled. Normally you would be able to set a registery key, but I read and heard that that is not the case anymore with Windows Server 2008 R2.
How can you enable/disable Path MTU Discovery on Windows Server 2008 R2?
Boudewijn Plomp, BPMi Infrastructure & Security