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

: Stop the conflicting service just long enough to complete the Veeam upgrade. However, be aware that Veeam may fail to function correctly after the upgrade if the other application reclaims the port. Step 3: Changing the Port Post-Installation

Update the Replica settings for each individual VM to match this new port to avoid re-replication. Adjust Third-Party Applications : Stop the conflicting service just long enough

to change the port 443 requirement within Veeam v13. Instead, you must reconfigure or move the conflicting application. Hyper-V Replication Adjust Third-Party Applications to change the port 443

: Frequently uses 443 and may need to be uninstalled or moved to a different port. Note the PID (1234 in this example)

Note the PID (1234 in this example).

Common culprits include , IIS (Internet Information Services) , Windows Remote Management (WinRM) , or third-party monitoring tools. Phase 2: Resolve the Conflict