Logon Sate - Pending

Today we started having end users trying to log into our new VDI environment.

Which is using Wyse Devices C10LE, vWorkspace 7.2 MR1, and SCVMM 2008.

Yesterday we have only 30 devices trying to connect up and about 75% would get a desktop on the first try but the others would go into the pending state.

Today more devices have been setup and trying to get as many connected to the system today (max 300) but only a very small ammount or actually connecting up to the desktops, while the majority are getting Logon State of Pending. (Currently 47 pending, 12 logged in)

Is there anyway to increase the initial connection timeout?

Guessing its a timeout issue because of the follow error that is sent back to wyse device.

Any  advice?

The wyse is returning an RDP error of

WSAETIMEDOUT

10060

Connection timed out.

A connection attempt failed because the connected party did not properly respond after a period of time, or the established connection failed because the connected host has failed to respond.