Failed To Connect To | Vmware Vcenter Converter Standalone Server On Port 443

Another application, perhaps a misconfigured backup agent or a forgotten web server, has stolen port 443. When the Converter knocks, a stranger answers. The conversation ends in confusion.

A: No. This is purely an OS-level networking and service issue. Another application, perhaps a misconfigured backup agent or

TCP [::]:443 [::]:0 LISTENING

Since disabling your production web server is rarely an option, the best solution is to change the port that VMware Converter uses. Sometimes the error occurs when you try to

Sometimes the error occurs when you try to connect Converter client directly to an ESXi host (port 443) or vCenter Server. In that case: an Apache server

VMware vCenter Converter is a tool of grand ambition. Its purpose is migration: to take a physical server (perhaps running an ancient, beloved Windows 2003 instance in a dusty closet) or a virtual machine from a competing hypervisor (like Hyper-V), and transplant it into the warm, standardized womb of a VMware environment.

The most frequent cause of this error is a port conflict. Port 443 is the standard port for HTTPS traffic. If you have installed vCenter Converter on a machine that is also running a web server (like IIS), an Apache server, or even another VMware product (like vCenter Server itself), port 443 may already be taken.