Firewall blocking an application

Step 1: Note the exact app name and the message shown when it is blocked.

Step 2: Try the app on another network (for example a phone hotspot) to tell a firewall block from an app fault.

Step 3: Do not disable the firewall or antivirus yourself — it is a managed security control.

Step 4: Ask IT to review the block; include the app, the message, and when it started.