When upgrading to or installing , many administrators encounter the error: "Required port 443 for Veeam Backup & Replication is occupied by another application" . This occurs because port 443 is now hardcoded for the mandatory Veeam REST API Service and Web UI in version 13 . Why Port 443 is Required
If is using the port, you can change its binding via the IIS Manager (InetMgr.exe) by selecting "Edit Bindings" for the website and changing 443 to a different port. When upgrading to or installing , many administrators
Major Issues After Upgrading to Veeam V13: Port 443 Conflict Major Issues After Upgrading to Veeam V13: Port
Currently, there is within the Veeam installer to change the port for the REST API Gateway. You must free up the port on the host server: Stop or Reconfigure the Conflicting Service : When upgrading to or installing