This issue may Cause because of one reason Windows Firewall is restore default or some changes in firewall by any application.
Normally VDI desktop Should have Below mentioned program allowed and also firewall port should be open
Now, we will manually add required apps and port.
Go to windows firewall and open Allow Programs or feature through firewall.
Click Allow another ProgramClick on Browse..
on comparing, we need another Program to allow Vmware PCoIP Server
So click on Allow another Program. Click Browse..
Open Windows Firewall and open Advanced settings
Since we have Create inbound Rule but we need to create Outbound Rule also
Select Outbound Rules and click on New Rule..
Select Port and Click Next
Give Firewall name and click Finish
If you Try to connect VDI Desktop, you will able to connect it successfully