Right-click the button and select PowerShell (Admin) or Terminal (Admin) . Execute the following command to see the port owner: powershell
(ironically)
If the error message does not specify which application is holding the port, you can identify it using Windows built-in tools.
Depending on the application returned by your query, choose the corresponding resolution pathway below.
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 . Right-click the button and select PowerShell (Admin) or
Accessing the Veeam Backup & Replication RESTful API.
Connections to Veeam Cloud Connect and public cloud object storage (AWS, Azure, Google Cloud).
Remember: Port 443 is a precious resource on any Windows server. Treat it as such, dedicate Veeam to its own machine wherever possible, and always perform a port audit before installation or upgrade. Your backups—and your peace of mind—depend on it.
Port 443 is the standard port for secure web traffic (HTTPS). In a Veeam environment, it is used for several critical functions: A specialized solution exists for users encountering the
The "temporary disable" method is a recognized workaround for the upgrade process, but Veeam support has officially stated there is no supported method to change the Veeam Web Service port afterward.
Execute this command to get a clean breakdown of the process: powershell
You’re installing or upgrading Veeam Backup & Replication, and suddenly you hit a roadblock:
The Veeam Backup Enterprise Manager and modern Veeam consoles communicate via this port. Step 1: Identify the Conflicting Application Connections to Veeam Cloud Connect and public cloud
Older versions historically utilized ports 80 and 443 as fallbacks for incoming connections.
Go to Edit -> Preferences -> Shared VMs -> Change Settings -> Disable Sharing -> Change the port -> Re-enable Sharing.
Locate the field for or HTTPS Port (defaulted to 443).