Test upgrades in a non-production environment first. The Veeam community suggests: "To reproduce your error, I suggest spinning up a VM, installing VBR along with another service that uses the same port".
Sort by the column to find the number you discovered in Step 1. Right-click the process and select End process tree .
The situation changed dramatically with Veeam Backup & Replication version 13. Veeam introduced a new service called the "Veeam Web Service" which requires port 443 and, according to Veeam Support, this port is "hardcoded" for the Veeam Web service and API Gateway.
Look for lines showing LISTENING . The number at the very end of that line is the . Test upgrades in a non-production environment first
Often uses port 443 for its replication service.
The error can manifest in different scenarios:
To instantly reveal the process name from that owning PID, run: powershell Right-click the process and select End process tree
Open IIS Manager , expand Sites , click on the Default Web Site , and click Bindings in the right-hand panel. Select the HTTPS binding and edit it to use a different port (e.g., 8443), or stop the website if it is not needed. 2. VMware Workstation / vCenter Server
This guide breaks down precisely why this happens, how to identify the true culprit, and the steps to achieve a stable, conflict-free Veeam environment.
Update the replica server port in the settings of each VM to match this new port. Look for lines showing LISTENING
Major Issues After Upgrading to Veeam V13: Port 443 Conflict
If the Windows Server hosting Veeam also runs IIS, the Default Web Site often binds to port 443.
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To help narrow this down further, could you tell me or process ID (PID) showed up as occupying the port on your server? If you are running into this during a clean installation or an upgrade , letting me know will help me provide the exact configuration steps. Share public link