Windows 10: Mixed Reality Portal

Hello,
Please help me to uninstall this useless program. What I did so far after searching for an answer, followed the instructions on this "https://winaero.com/blog/uninstall-mixed-reality-portal-windows-10/" site, made manually the entries in the registry. ( This mixed reality portal was not seen in settings before the registry editing).
Opened the settings, there it was, clicked on it on the "Uninstall" button, what I got is that first I have to disconnect my headset - which I do not have, and close this program - which never opened it. And searched in the "Task Mgr", it is not listed there. According to the explanation on mentioned site, the uninstall button should be a whole button, what I have is 'half' a button. Clicked on the 'half', no results/
Attached a screen shot of that message.
Answers will be appreciated.
Thanks


:)

 

Mixed Reality Portal not loading

We appreciate your response. For now, the Mixed Reality Portal is only available with the Windows Creators Update for Windows Insider. In order to ensure which Windows build you have, you can follow these steps:

• Windows + R.
• Type winver and press Enter.

Once you've determined your build and have successfully installed the Windows 10 Creators Update, you may experience the new feautures offered by the update.

The Mixed Reality Portal may be greyed out because you havn't attached the immersive headset yet. Nevertheless, you can test mixed reality apps on your PC without a Windows Mixed Reality immersive headset by using the
Windows Mixed Reality simulator.

If you need further assistance, let us know.

 

What is "Mixed Reality Portal" ? Can I remove it?

Hi,

For us to provide the best solution to your concern, we need additional information. Kindly answer the following questions below:

• Are trying to uninstall the Mixed Reality Portal?
  
• What steps have you done so far?
  

If you're trying to uninstall the Mixed Reality Portal, let's try uninstalling it thru the Settings app. Follow the steps below:

• Open Settings.
  
• Click Mixed reality.
  
• Select Uninstall on the left pane.
  
• Click Uninstall.
  

We'll keep an eye out for your response.

 

What is "Mixed Reality Portal" ? Can I remove it?

I followed these steps but Mixed Reality Portal is not in Programs And Features, so it's not possible to turn this feature off. Any other suggestions?