We (me and a fellow worker) have just started using remote desktop to work. I have been using NetSupport Manager for almost 10 years but just switched to Windows 10 on virtual PC at work and discovered that remote desktop performance with UDP is leaving NetSupport Manager in the dust, performance wise.

I have opened the UDP port for my PC and use in UDP mode since Friday. I just cloned the virtual PC for my fellow worker and adjusted his user. I connect to this PC and UDP is enabled. But he is on Windows 7 x64 and he is not able to obtain the UDP enabled.

Yes, he installed the updates for RDP 8.0 and it shows it.
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But UDP is still not working.
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I tried to update to RDP 8.1 but it says this:
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Any idea ? I suggested to upgrade to Windows 10 but I would rather find a solution for Windows 7 since it is supposed to work.