Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link |top| Today
Run the Veeam Backup & Replication installer executable again.
The number 1234 is the Process ID (PID).
If you are managing a large deployment or are restricted by compliance rules that prevent you from freeing up port 443 on your machine, it is highly encouraged to check the official Veeam Community Forums or open a feature design case on the Veeam R&D Hub. Product management actively reviews community issues regarding port flexibility for future patch deployments. Run the Veeam Backup & Replication installer executable
The "Required port 443 for Veeam Backup & Replication is occupied by another application" error typically occurs when upgrading to . In this version, port 443 is hardcoded for the new Veeam Web Service/API Gateway and cannot be changed through standard supported methods . Identifying the Conflicting Application
To avoid port conflicts in production environments, implement these architectural rules: Solutions and Workarounds
Sort by the column to find the number you discovered in Step 1. Right-click the process and select End process tree .
The "port 443 occupied" error in Veeam Backup & Replication requires a balanced approach. While temporary workarounds can help complete installations or upgrades, the most reliable long-term solution is to configure your infrastructure according to best practices. For organizations with no other practical option, the most reliable approach is to reconfigure the conflicting application rather than attempting to modify Veeam's port usage. VMware vSphere backup
Veeam has acknowledged the port 443 requirement issue. In response to community feedback about v13 requiring port 443, a Veeam representative stated: "Yes we plan to allow this in the future if there's big demand". This suggests that future versions might provide more flexibility in port configuration.
Starting with newer architectures, Veeam heavily integrates its unified management console, REST API gateway, and Identity Service via standard HTTPS. The new setup connects natively over port 443 to handle identity verification and web certificates [1.18].
Which specific (e.g., VMware vSphere backup, replication, Cloud Connect) is throwing the error? Share public link
: Frequently conflicting services include IIS (Internet Information Services) , Hyper-V Replication , Remote Desktop Web Access , or third-party security agents like Qualys . Solutions and Workarounds
