Problem description
Windows 20012 VM lost network connectivity.
Troubleshooting
while investigating the issue at first and
found we could not configure the gateway to VM NIC. Then, we use the cmdlets
(set devmgr_show_nonpresent_devices=1) to check see if there is any ghosted on
the NIC, but do not found then.
Then, we use cmdlets “netsh int
show int” check the status of the interface and found our network adapter could
not be initialed properly. And, we found we installed Symantec on the
problematic VM. Then, after researching, we found there is a know issue on
Symantec. More specific, the Symantec Endpoint Protection adds a filter on NDIS
miniport and the filter prevents the NDIS driver from running properly after
rebooting.
Finally, we change the key FilterRunType from from 1 to 2 to fix the issue.
Solution/Work around
To work around the issue disable the driver using the following
registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\{4d36e974-e325-11ce-bfc1-08002be10318}\{72891E7B-0A3D-4541-BDCB-3DA62E25B6A8}\Ndi
Change the value from of FilterRunType from 1 to 2 and reboot.
