Launch application from URI - VB.NET

Question

I have tried to create a protocol for my application to launch a game, but I seem to be having trouble actually launching it from a URI. The protocol I'm trying to use is roblox:// but if I type it in, it doesn't seem to launch the application, Windows tells me it can't find an app to launch the URL.

The code I used is:

If (My.User.IsInRole(ApplicationServices.BuiltInRole.Administrator)) Then
    Dim newRegKey As RegistryKey
    newRegKey = Registry.ClassesRoot.CreateSubKey("RobloxProtocol", RegistryKeyPermissionCheck.ReadWriteSubTree)
    newRegKey.SetValue("", "URL:roblox")
    newRegKey.SetValue("URL Protocol", "")
    Dim newRegCom As RegistryKey
    newRegCom = newRegKey.CreateSubKey("shell\open\command")
    newRegCom.SetValue("", """" & Application.ExecutablePath & """" & " -id " & """" & "%1" & """")

    warnText.Text = "ROBLOX Protocol Launcher is installed!"
Else
    warnText.Text = "Please run ROBLOX Protocol Launcher as Administrator to finish the install process."
End If

If I look in the Registry using regedit, the keys are there (the ones I registered were the ones from this article), it just doesn't seem to be launching. I tried after restarting my computer and it still doesn't.

Answer 1

In the article you reference, the subkey name was alert under HKCR, where the url to launch from is alert://....

Change your subkey to roblox instead of RobloxProtocol (or try launching from robloxprotocol://