How can I view the Prefect UI that's hosted on a Windows Server virtual machine?

[digitalghost-dev]

I have a Windows Server 2022 virtual machine where Prefect is running on localhost:4200 and when I connect to the virtual machine and visit localhost:4200, I can see the UI just fine,

The goal here is to access to Prefect's web UI from a work machine. If I visit the virtual machine's IP address with the port (134.197.19.79:4200), it won't connect.

I've tried start the Prefect server with different hosts:
prefect server start --host 0.0.0.0
prefect server start --host 134.197.19.79

However, I still am not able to connect to the web UI from the work machine. I have created a TCP inbound rule on the VM to allow connections set to port 4200 but still no luck.

Not sure if I am missing anything here or if anyone has setup something similar.

[zzstoatzz]

Hey @digitalghost-dev

hmm, not exactly sure, but here are a couple things I'd check:

1. PREFECT_API_URL correctly set

   prefect config set PREFECT_API_URL=http://<VM-IP>:4200/api

   This command should be executed both on the VM hosting Prefect and any machine trying to access it.

2. Network and Firewall: Ensure that the VM's network settings allow for external connections on port 4200. It's also worth double-checking that no outbound rules are blocking the connection from the machine you're trying to connect from.

3. Server Configuration: Running the server with --host 0.0.0.0 should allow connections from any IP address. If that doesn't work, it might be worth revisiting the network configuration to ensure there’s no IP binding or NAT issue.

For more details, these discussions might be relevant (especially the first):

• Can't connect to Prefect Server
• Prefect UI on Windows Server

If you keep running into issues, let me know!