Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application Jun 2026

Resume the Veeam Backup & Replication setup. The port check should now pass. If you still see the error, reboot the server and check again—some processes release ports only after a full restart.

Get-NetTCPConnection -LocalPort 443 -ErrorAction SilentlyContinue | Select-Object OwningProcess, State | Format-Table Resume the Veeam Backup & Replication setup

The output was chilling:

: For production stability, Veeam recommends installing VBR on a dedicated server to avoid resource and port conflicts with other critical business applications. reconfiguring a known service like IIS or Hyper-V to free up port 443? If this port is occupied by another application,

In , port 443 is a critical requirement for the new Veeam Web UI and REST API gateway. If this port is occupied by another application, the VBR installation or upgrade will fail, or services will not start correctly because the binding is "hardcoded" for these components. Identifying the Conflicting Application Resume the Veeam Backup & Replication setup