Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application Jun 2026
Run port scans prior to installing enterprise software to safely map out network real estate.
netsh http show servicestate
A specialized solution exists for users encountering the port 443 conflict during an upgrade to Veeam Backup & Replication version 13 (or later). In this version, the "Veeam Web Service" requires port 443, and it is hardcoded with . Run port scans prior to installing enterprise software
After applying your fix, ensure that everything works correctly:
you stopped earlier (if they are still needed). After applying your fix, ensure that everything works
: If another site is using 443, change its binding in the IIS Manager to a different port or a specific IP address.
Open the security suite's administrative console and change its local web management port settings. Often used for "Default Web Site" bindings
Often used for "Default Web Site" bindings.
Potential risks & mitigations
Before you can fix the issue, you must find out exactly which process is currently listening on port 443. Using Command Prompt (Netstat)
Before you can resolve the conflict, you must find out exactly which process is currently holding port 443 hostage. Method A: Using Windows Command Prompt (Fastest)
