Teaming under Hyper-V is a tricky thing :-)
We had several issues with our drivers under a teaming environment. Our latest drivers however fix them :-) If you go to support.intel.com and wade through the menu's, you will be albe to get to our latest drivers and things should magically start working for you.
I would have waded through the menu's for you, howver I don't know which Pro 1000 nor which version of Hyper-V you are running (32/64 bit).
thanks for your help.
I think I've got the problem. I made a fresh install of the System, disabled the Broadcom protocol-bindings for all NICs, created the team with ProSet and disabled VLANFiltering in the registry.
I use the primary, untagged VLAN for the parent and sometimes in the VMs, and make the tagging for the VMs in the Hyper-V config.
Now it seems to be working like a charme.