Hi, we are converting a load of different physical servers to VMs on 2008 R2 using VMM 2008 R2.
On one server the P2V fails around 60% with the error that it can't create what looks to be a vhd file for the servers C drive.
The error code is 0x800700B7 file already exists.
Problem is the file doesn't exist on the target Hyper-V server.

under your hyper-v machine folder check the configuration xmls and make sure if the vhd file somehow is attached. also make sure you have enough space on c drive.

pls let me know the result.

Use this video to fix: https://www.youtube.com/watch?v=reb4eMcpl20