Symptoms

Activating or deactivating the filter driver on a Link Aggregation Group (LAG for short) using GigEConfigure, the NDIS filter driver will freeze and the process cannot be killed even with task manager. After a restart, GigEConfigure will show the filter driver status correctly however. Also when connecting a debugger the situation as described here: https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/0735c73e-6d2e-49ab-a947-e10fe8137ac3/ndis-driver-freezes-during-install-via-inetcfgclasssetupinstall?forum=wdk can be observed.

Cause

The exact cause for this issue is unknown but it is believed to be a bug in the network cards kernel module.

Resolution

So far, to avoid this behavior disconnect both network cables just before activating or deactivating the filter driver. Afterwards reconnect the network cables again.