We have an issue when we RDP to Server 2012 from a windows 7 OS
1. on the remote server 2012 this is with the tick removed for NLA on the remote settings
a. once the line "enablecredsspsupport:i:0" is placed in the default.rdp file RDP works
b. If the enablecredsspsupport:i:0 is removed: it will bring up a logon screen (for sure we are typing the correct account details) , but it just does not allow logon.
2. With the tick present for NLA on the remote settings
a. with the line enablecredsspsupport:i:0 added to the windows 7 RDP
We get the error : the remote Computer requires Network Level Authentication which your computer does not support ......
b With Line enablecredsspsupport:i:0 removed its the same as 1.b.
So the only way it works is with NLA tick mark off and line enablecredsspsupport:i:0 added to the windows 7 RDP
Windows 7 RDP = Shell Version 6.17600
Network level authentication supported
remote desktop protocal 7.0 supported