Cry about...
Windows Hyper-V-Server

Remote Desktop can't connect to the remote [hyper-v] computer

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Symptom

When trying to use Remote Desktop Connection to connect to the hyper-v server, remote desktop connection fails with its standard (non-descript) error message:

The Solution

There are a number of things to check:

1. On the Hyper-V server, using sconfig check that Remote Desktop is enabled.
2. From the computer you are trying to remote desktop from check that there is network connectivity between the compute and the server.

   The simplest way to check this is probably to open a command prompt window and using ping to ping the server:

   C:\> ping hserver

   If it has not already been done then you will need to enable pings at the hyper-v server as the default setting is for it to not respond to pings.

3. On Hyper-V-Server 2012 R2 the firewall may be blocking RDC (I think this is an issue introduced with R2). To enable remote desktop to connect through the firewall, log into the hyper-v-server, and at the command prompt enter:

   netsh advfirewall firewall set rule group="remote desktop" new enable=Yes

   thus:

   C:\> netsh advfirewall firewall set rule group="remote desktop" new enable=Yes
   
   Updated 6 rule(s).
   Ok.
   
   C:>