: Open a command prompt as administrator and run netstat -anob | findstr :443 . This will display the Process ID (PID) and the name of the executable using the port.
Major Issues After Upgrading to Veeam V13: Port 443 Conflict : Open a command prompt as administrator and
: Use the command Get-NetTCPConnection -LocalPort 443 to find the associated PID. If is using the port, you can change
If is using the port, you can change its binding via the IIS Manager (InetMgr.exe) by selecting "Edit Bindings" for the website and changing 443 to a different port. If another service is already listening on this
To resolve the conflict, you must first identify which process is currently using port 443.
In Veeam v13, port 443 is used for the . If another service is already listening on this port, the Veeam services will fail to bind, preventing the VBR console from starting or the upgrade from completing. How to Identify the Conflicting Application