Summary: Use Windows PowerShell to determine the version of WSMAN running on a remote computer.

 How can I use Windows PowerShell to determine the version of WSMAN that is running on remote computers?   

 Use Test-WSMAN:

Test-WSMan -ComputerName myserver

wsmid           : http://schemas.dmtf.org/wbem/wsman/identity/1/wsmanidentity.xsd

ProtocolVersion : http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd

ProductVendor   : Microsoft Corporation

ProductVersion  : OS: 0.0.0 SP: 0.0 Stack: 2.0

If you also want to see the operating system version, use:

Test-WSMan -ComputerName myserver  -Authentication default

wsmid           : http://schemas.dmtf.org/wbem/wsman/identity/1/wsmanidentity.xsd

ProtocolVersion : http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd

ProductVendor   : Microsoft Corporation

ProductVersion  : OS: 6.1.7601 SP: 1.0 Stack: 2.0