If anyone has an idea how to make the custom-build web browser the default browser instead of IE or Netscape. Please suggest and share with us. I already change the following registry to my browser but it still is not working. [HKEY_CLASSES_ROOT\http\shell\open\command] [HKEY_CLASSES_ROOT\http\shell\open\ddeexec\Application] [HKEY_CLASSES_ROOT\https\shell\open\command] [HKEY_CLASSES_ROOT\https\shell\open\ddeexec\Application]