two machines, one running 8.1 pro, the other 8.1... i can easily, very quickly, and reliably connect to the pro machine from the 8.1 machine, but for the life of me i can't do the opposite, i can't connect to the 8.1 machine from the pro machine, and i'm running out of google sought solutions. when i attempt to connect to the 8.1 machine from the pro machine i can never get beyond the following error message:

as far as i can tell the settings for both machines are identical, and include:
> allow remote connection enabled
> firewalls on both machines disabled
> all related services enabled
> a recommended gpedit.msc setting adjusted (lan authentication level)
> both machines actively connected to private network
> successful pings and tracerts to both machines
> ipconfig release/renew, flush dns, etc. attempted to no avail
ironically i don't even want to connect to the pro machine from the 8.1 machine, which works perfectly, i just did it to test and it passed with flying colors. what i want, which is to connect to the 8.1 machine from the pro machine, is a different story, just can't get it to work. any thoughts or suggestions would be greatly appreciated!
edit: the connection is through a router / private network, i.e. the machines are in the same location/building, the connection is not through the internet.

as far as i can tell the settings for both machines are identical, and include:
> allow remote connection enabled
> firewalls on both machines disabled
> all related services enabled
> a recommended gpedit.msc setting adjusted (lan authentication level)
> both machines actively connected to private network
> successful pings and tracerts to both machines
> ipconfig release/renew, flush dns, etc. attempted to no avail
ironically i don't even want to connect to the pro machine from the 8.1 machine, which works perfectly, i just did it to test and it passed with flying colors. what i want, which is to connect to the 8.1 machine from the pro machine, is a different story, just can't get it to work. any thoughts or suggestions would be greatly appreciated!
edit: the connection is through a router / private network, i.e. the machines are in the same location/building, the connection is not through the internet.