If your Veeam server is also acting as a web server, IIS likely has a "Default Web Site" bound to 443.
Veeam uses Port 443 (HTTPS) for various critical tasks, including communication with the backup server, cloud gateways, and managing VMware vSphere environments. When another service grabs this port first, Veeam can’t bind to it, bringing your backup infrastructure to a halt. Here is how to identify the culprit and fix the conflict. 1. Identify Which Application is Using Port 443
Changing Veeam’s default ports often leads to a "domino effect" of connectivity issues across your proxies and repositories. 4. Re-running the Veeam Setup If the conflict happened during installation: Stop the conflicting service. Click Retry in the Veeam installer. If your Veeam server is also acting as
If you’re trying to install or start Veeam Backup & Replication and you’re hit with an error stating that , you’ve run into one of the most common configuration hurdles in the backup world.
Use the command netsh http show servicestate to see which registered endpoints are active. 3. Can You Change the Port in Veeam? Here is how to identify the culprit and fix the conflict
Open the IIS Manager, go to Bindings for your sites, and either remove the HTTPS binding or assign it to a different IP address or port. C. Windows Global HTTP Settings
Look for the line that says LISTENING . The number at the far right is the . The Visual Way (Task Manager): Open Task Manager and go to the Details tab. Before you can fix the problem
While you can technically change the ports Veeam uses, for many of its core components (like the Veeam Backup & Replication console and the REST API).
Once Veeam is installed and its services are running, you can decide if you want to restart the other application on a different port. Summary Checklist Run netstat -ano to find the PID. Identify the app in Task Manager. Reconfigure or disable the competing service. Restart Veeam services (via services.msc ).
Before you can fix the problem, you need to find the "squatter." Since Port 443 is the standard port for secure web traffic, the most common culprits are , Apache , Skype , or VMware Workstation . The Quick Fix via Command Prompt: Open Command Prompt as an Administrator . Run the following command: netstat -ano | findstr :443