Major Issues After Upgrading to Veeam V13: Port 443 Conflict
Example output:
If the server is multi-role and the application currently using Port 443 cannot be changed (e.g., a critical internal web portal), you can configure Veeam to use alternate ports. However, be aware that this may complicate firewall rules and is not supported for Veeam Cloud Connect providers.
: For production stability, Veeam recommends installing VBR on a dedicated server to avoid resource and port conflicts with other critical business applications. reconfiguring a known service like IIS or Hyper-V to free up port 443? Major Issues After Upgrading to Veeam V13: Port
Look for rows showing LISTENING . The number at the far right of that row is the . Match the PID to an actual application name by running: tasklist | findstr [Insert_PID_Here] Use code with caution. Using PowerShell For a cleaner, direct output, run this PowerShell command: powershell
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Leftover web server stacks from third-party monitoring tools. reconfiguring a known service like IIS or Hyper-V
Before diving into fixes, recognize how this error manifests:
Culprit A: IIS (Internet Information Services) or World Wide Web Publishing Service
If installed on the same machine, VMware services default to port 443. Match the PID to an actual application name
Once you’ve found the app, you have two choices: stop it or move it. A. VMware Workstation / Server VMware often uses Port 443 for its "Shared VMs" feature.
Open the security suite's administrative console and change its local web management port settings.
If your Veeam Backup server doubles as a Hyper-V host, the native Hyper-V Replication engine might be configured to use HTTPS traffic over port 443. Open the Hyper-V Manager . Click Hyper-V Settings > Replication Configuration .
: Look at the rightmost column for the Process Identifier (PID) (e.g., 1234). Find the application name : Open Task Manager (Ctrl+Shift+Esc).