I know this is probably a vmware or windows issue, but I wish someone had a good solution to the "Cannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine" issue, without disabling vss and doing a non-quiesced snapshot.
I have read vmware KB 1018194 and the following Community discussion...no good solution.
http://tinyurl.com/3hg4mat
http://tinyurl.com/42zmr7l