Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link [new] Jun 2026

Veeam Backup & Replication uses various ports for communication between components, including the Veeam Backup Server, Proxy Servers, and Repository Servers. One of these ports is TCP 443, which is typically used for HTTPS traffic.

: Sometimes causes conflicts that prevent the VBR console from loading. Veeam Backup & Replication uses various ports for

| Problem | Quick Fix | | :--- | :--- | | PID 4 (System) / HTTP.SYS reservation | netsh http delete urlacl url=https://+:443/ | | IIS running | Change Default Web Site’s HTTPS binding to 8443 | | SQL SSRS | Change Reporting Services port to 4443 | | RD Gateway | Change SSL port in RD Gateway Manager | | Docker / Containers | Stop docker or com.docker.service | | Antivirus web filter | Disable SSL intercept for the Veeam server IP | | No other option | Change Veeam’s own HttpPort registry key to 8443 | | Problem | Quick Fix | | :---

Reviewers on the Veeam R&D Forums have noted that stopping the service entirely may be necessary if it prevents the console from loading. Next Steps including the Veeam Backup Server

He connected a crash cart—a keyboard and monitor directly into the server.

: Run the following command as an Administrator: Get-Process -Id (Get-NetTCPConnection -LocalPort 443).OwningProcess

He had two choices.