I´ve developed an cordova app with visual studio an deployed it to windows.
After that I get a folder "~\platforms\windows\AppPackages\" with a *.appx file like in the description of the answer in How to deploy Visual Studio Cordova app to Windows 8?
I copied the appx file on my windows tablet with an usb-stick. Now I tried to run the file. --> Same reaction like on a normal desktop pc. Can´t run the extension. (Dialog with "How should this type of file to be opened")
What is the right way, without an app store.
If you want to deploy for testing purposes, under the AppPackages folder you should see a *_Test folder as shown below. You can copy this folder onto the machine you want to test the app on. Within that folder there is a powershell script that will install the app onto the machine.