Windows 10: GPEdit: namespace already defined?

I ran Windows Update as normal this morning, but got a message at the top saying "Some settings are managed by your organisation." I looked on the forum, and sure enough, there were others with this problem.

I chose the fix that involved GPEdit, but on running this I got the attached dialog box (twice).

How do I rectify this?

:)

 

This app has been blocked for your protection, mmc.exe

Solved Namespace error by renaming the applicable files.

gpedit error gone, but mmc.exe blocked error still exists :-(

 

Error In App develo[pmet code

I'm Trying to Develop an Windows phone app I wrote

usingMicrosoft.Phone.Controls;

usingSystem.Windows.Controls;

I am getting error on these Statements -> The type or namespace is does not exist in namespace Microsoft

in Microsoft namespace there is only Csharp and Vb Namespace what should I do