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

Verify that the PID matches the Veeam service process ID found in Task Manager. Preventative Best Practices

Run the following command to list all active TCP connections and their corresponding Process IDs (PIDs): netstat -ano | findstr :443 Identify the at the far right of the output line. Verify that the PID matches the Veeam service

Change the port value to an alternate port (such as 8443 ), or apply a explicit host header name if sharing an IP address. Click and restart IIS. Scenario C: Transient or Non-Essential Applications Click and restart IIS

The approach to solving this problem depends heavily on which version of Veeam Backup & Replication you are using. You may need to manually configure alternative endpoints

To instantly reveal the process name from that owning PID, run: powershell

If changing the other applications isn't an option, you can adjust Veeam's configurations or modify its specific port requirements through the Veeam console. You may need to manually configure alternative endpoints or alter network settings in the Veeam Service Provider Console (VSPC) IIS settings to bypass the port 443 hardcoded binding. Verifying and Troubleshooting After Changes