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

Opened IIS Manager → Default Web Site → Bindings → removed HTTPS:443 binding → Restarted IIS ( iisreset ). Result: Veeam Backup Service started normally.

If Veeam services were previously uninstalled incompletely and left port bindings. Opened IIS Manager → Default Web Site →

: The command will return a list of connections using port 443. Focus on lines with the state "LISTENING". Note the number in the far-right column—this is the PID (Process Identifier). For example: TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 1234 Opened IIS Manager → Default Web Site →

Example output: