Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application |link|

When upgrading to Veeam Backup & Replication (VBR) v13 , many users encounter a critical installation block:

Look for a line showing LISTENING with port 0.0.0.0:443 or [::]:443. The last column is the Process ID (PID). When upgrading to Veeam Backup & Replication (VBR)

Migration & Compatibility

For IIS: Open IIS Manager, select the site, click Bindings in the right pane, edit the HTTPS binding, and change port 443 to an unused port (e.g., 8443). select the site

Suggested success metrics

Step A: Check Listening Ports