I've got 3 machines(2x servers and desktop) and when I try to connect between servers I've got errorcode 0x80090302.
1) Connection via PSSession from desktop works to both servers
2) Credentials are correct
3) I try
set-item wsman:\localhost\Client\TrustedHosts * and it didn't help
4) Test-NetConnection to ports 5985 and 5986 between servers works correct
and I have no idea what else can be a reason of this problem