Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link |best| «PREMIUM ✭»

Older versions occasionally bind to web ports as fallbacks.

Look for the "Specify the port to be used for authentication using Kerberos (TCP/IP)" setting and change it from 443 to a custom port, such as 4443 .

Microsoft's Sysinternals TCPView provides a graphical interface for analyzing port usage and identifying which processes are holding specific ports. Older versions occasionally bind to web ports as fallbacks

Legacy communication apps sometimes occupy ports 80 and 443 as alternatives for incoming connections.

Look for lines showing LISTENING . The number at the very end of that line is the . Legacy communication apps sometimes occupy ports 80 and

: Often uses 443 for HTTPS-based replication.

Run the following command to find the name of the application associated with that PID: tasklist | findstr [PID] : Often uses 443 for HTTPS-based replication

The PID should now correspond to VeeamBackupSvc.exe .

Depending on what the commands above reveal, use these targeted fixes for common conflicting applications: Conflicting Process Common Cause Recommended Resolution System (PID 4) Microsoft IIS or World Wide Web Publishing Service Stop the WWW service or rebind IIS to a different port. vmware-hostd.exe VMware Workstation / Server sharing enabled Disable HTTPS sharing inside VMware Workstation settings. httpd.exe / nginx.exe Local Apache or Nginx web servers

Resolving Port 443 Conflicts in Veeam Backup & Replication v13