Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application !!link!! Jun 2026

Veeam Backup Service fails to start. Event log shows “Address already in use:443” .

She opened Teams. Direct message to .

User experience flow (concise)

: Some users have reported that stopping the conflicting service just long enough to complete the Veeam upgrade works, but VBR services will likely crash once the other app is restarted. Veeam Service Provider Console Veeam Backup Service fails to start

In , port 443 is a hardcoded requirement for the REST API/Web UI service and cannot be changed through any supported method. If this port is occupied, the VBR services will fail to bind, and your installation or upgrade will be blocked. Direct message to

She restarted both services. She ran netstat -ano | findstr :443 . If this port is occupied, the VBR services

The fastest way to find the PID (Process Identifier) using port 443 is through the command line. Open as an Administrator. Run the following command: netstat -ano | findstr :443 Look for a line showing LISTENING in the state column. Note the PID listed at the far right of that line.