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Access Gateway timesout on Web interface client download

Description: Access Gateway and WI function normally, however the citrix client download link for devices WITHOUT the client link works, but the client download simply times out.

Resolution:
Run wireshark on the WI server and determine if the download link request is getting through from the Access Gateway

If no firewall issue check for no¬†“TCPZero Window” items are listed from Wireshark capture as its likely the Access gateway MTU on its Ethernet interface is too large, try reducing it.

In our instance we reduced the physical access gateways MTU from 1500 to 1400.