After implementing the suggested steps, I was still having the error ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY on the browser in addition to the Plesk Startup Services stopping immediately after stating. So I decided to resolve that error. I went to the registry and carried out the following steps...
After I upgraded my server to TLS 1.2, Plesk Startup Services would stop immediately it starts, when I checked the Server log it give the error "A fatal error occurred while creating a TLS client credential. The internal error state is 10013". I need help please