She restarted both services. She ran netstat -ano | findstr :443 .
Check Task Manager (Details tab) to see which application corresponds to that PID. 2. Common Conflicting Services Hyper-V Replication She restarted both services
If the server is configured as a Hyper-V Replica server, it may use 443 by default. The error "Required port 443 for Veeam Backup
If you cannot change the port of the other application, you can reconfigure Veeam to use a different port for its web UI or API components during installation or via the registry/configuration files. She restarted both services
The error "Required port 443 for Veeam Backup & Replication is occupied by another application" is a classic collision between modern web-based services and Veeam's deep reliance on HTTPS for its core services. While intimidating at first glance, it is almost always resolvable by methodically identifying the offending process—most often IIS—and either moving it to a different port or eliminating it entirely.