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

: If the host server acts as a Hyper-V Replication target over HTTPS, the system listener binds directly to port 443.

: Use Get-NetTCPConnection -LocalPort 443 to directly see the OwningProcess . Common Conflicting Services

Once you have the process name, use the corresponding solution below to clear port 443: Scenario A: Hyper-V Replication Server is Active : If the host server acts as a

: Co-locating management tools that use embedded web servers.

Once you know what process is holding the port, use one of the following methods to resolve it. Method A: Stop and Disable IIS Once you know what process is holding the

Once the upgrade completes, you may attempt to re-enable the third-party service on a different port. Registry Fix (Veeam Agents only) For standalone Veeam Agents

Linux (if applicable):

: Local management consoles for endpoint agents or software-defined routing applications. Phase 1: Identify the Occupying Application

For now, while Veeam product leadership has indicated a future intention to make the port configurable in VBR depending on demand, the present reality is that port 443 is a hard requirement for the newest versions. This guide provides you with the strategies you need to navigate that requirement and restore a stable, conflict-free data protection environment. Phase 1: Identify the Occupying Application For now,

By identifying the process holding the port and deciding whether to move the intruder or move Veeam, you can resolve the installation error and get your backup infrastructure up and running.

After deletion, restart the Veeam services or the installer.