Required Port — 443 For Veeam Backup Replication Is Occupied By Another Application Link

Major Issues After Upgrading to Veeam V13: Port 443 Conflict

To resolve the conflict, you must first identify which process is currently using port 443. Major Issues After Upgrading to Veeam V13: Port

: Veeam recommends installing VBR on a dedicated server to avoid port conflicts with other web-facing applications. Troubleshooting Connectivity Note that Veeam v13 services will still fail

: If the conflicting application is only needed occasionally, stop the service, complete the Veeam v13 upgrade, and then attempt to restart the other service. Note that Veeam v13 services will still fail to start if the port is occupied later. This will display the Process ID (PID) and

: Frequently conflicting services include IIS (Internet Information Services) , Hyper-V Replication , Remote Desktop Web Access , or third-party security agents like Qualys . Solutions and Workarounds

: Open a command prompt as administrator and run netstat -anob | findstr :443 . This will display the Process ID (PID) and the name of the executable using the port.