I have problems with my installed Postman on a Windows Server 2012 R2 (x64 Version 6.3, build 9600).
First of all, I have downloaded and successfully installed (and also later removed) different versions of Postman: 6.1.4 (tried x86 and x64) and 6.1.3 (tried x86 and x64)
Fact: I access my Windows Server 2012 R2 instance through a nested RDP like this
My computer -> Server 1 -> Windows Server 2012 R2
Same result with every tried Postman-version. Whats the problem here? I do not know about any other application on the server that have this GUI problem.