When opening the WEM server this gives an error "A valid license server with appropriate licenses needs to be configured" 

• The license server and port are correctly configured in WEM Infrastructure Service console
• The licenses have the correct SA DAte in Citrix Studio 
• Servers are reachable over the network (ping)

1. Test connectivity betewen the WEM Server & License Server on port 27000 & 7279
2. Open PowerShell and run 
   • PS> Test-NetConnection -ComputerName "LicenseServerName" -port "PortNumber" -informationlevel detailed 
3. Open CMD on the license server and run netstat –aon
4. Confirm there is connectivity to the WEM server on port 2700 & 7279

Problem Cause

Port connectivity between WEM server & License server was blocked 

• WEM error message "Specified license server is not available or appropriate licenses are not installed" - https://support.citrix.com/article/CTX221837
• WEM Admin console error: "A valid license server with appropriate licenses needs to be configured" - https://support.citrix.com/article/CTX229883
• A valid license server with appropriate licenses needs to be configured before you can start using Citrix Workspace Environment Management - https://support.citrix.com/article/CTX237421
• Tech Paper: Communication Ports Used by Citrix Technologies - https://docs.citrix.com/en-us/tech-zone/build/tech-papers/citrix-communication-ports.html