This error typically occurs during the installation or upgrade to Veeam Backup & Replication v13 (or newer), as port 443 is now hardcoded and required for the Veeam Web Service/API Gateway
Step 3: Configure Veeam Backup & Replication to Use a Different Port This error typically occurs during the installation or
net stop "VeeamBackupSvc"
net start "VeeamBackupSvc" IIS / Default Web Site – Often installed
| Measure | Description |
|---------|-------------|
| Dedicated Veeam server | Avoid installing Veeam on servers already running IIS, Exchange, or other HTTPS services. |
| Port auditing | Regularly run netstat -ano to monitor port usage. |
| Installation order | Install Veeam first, then other web services (or reconfigure their ports immediately). |
| Documentation | Maintain a "Port Usage Register" for critical infrastructure servers. | Elias exhaled, a long, shaky breath
Temporary Bypass: Some users report disabling the conflicting service only during the Veeam upgrade, though the VBR console may still fail to work post-upgrade if 443 remains occupied.
Veeam Backup & Replication is a comprehensive data protection solution designed to ensure business continuity by providing backup, replication, and restore capabilities for virtual, physical, and cloud-based environments. For its operations, especially in environments where SSL/TLS encryption is required, Veeam Backup & Replication relies on specific network ports. Port 443, the standard port for HTTPS, is one such critical port.
Elias exhaled, a long, shaky breath. The port was free. The backup was running.