Some of these settings are hidden or managed by your organization

At the office I had a problem with my developer PC. It was running Windows 10 and for some Visual Studio projects (UWP) etc. I had to set my machine to Developer Mode.

This setting can normally be set in Windows Settings, Update & Security, For Developers…

However….

On my machine this window stated that some of these settings are hidden or managed by your organization.

So I called my organization but they were unable to help me out. No one knew the cause of this message. No policy setting was set, I was administrator on the machine etc…

Call closed…

Problem not solved…

I needed this fixed so I gave it my best try… Maybe google could help me out. After a few searches I got the idea the message could erroneously be set by Windows, not because of company policies. I looks like some combination of settings and Windows 10 updates can have this situation as a result.

Walking through various forums with all kind of solutions, there was one simple solution that helped me out…

Remove all settings in the registry key except for one.

Make sure the key Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Appx looks like this:

In my case it also contained the key AllowDevelopmentWithoutDevLicence set to false. I completely removed that key and set AllowAllThrustedApps to true. Rebooted my machine.

Problem solved, case closed.