After upgrade my vsphere infrastructure to 5.5 i have problem of disconnect network after reboot:

https://communities.vmware.com/thread/498472

Now i have change on my vm windows the network adapter type from e1000 to vmxnet3

I have used this step :

– Save IP Address configuration
– Shutdown VM
– Copy Mac Address
– Remove E1000 network adapter
– Add vmxnet3 network adapter and set manual mac address
– Boot VM
– For windows 2008 and older set devmgr_show_nonpresent_devices=1
– Remove, if present, the old network adapter
– Configure ip address…