The following error might occur when you run an installable cloud app: Cannot connect to the server when creating the session.
Cause A:
The .NET server might have its IP address changed, for example, it is set to obtain IP address automatically.
Solution A:
Set a static IP address or a domain name for the .NET server.
Cause B:
The .NET server might have set up a firewall and the firewall might not allow the specified port number to go through.
Solution B:
Configure the firewall on the server to allow the specified port number to go through.