I get this all the time. VS11 Beta (Express or Pro)
Error 1 Error : DEP0800 : The required framework "C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0\ExtensionSDKs\Microsoft.WinJS\0.6\Microsoft.WinJS.0.6.Debug.appx" failed to install.
0x800706D9 : While installing the Microsoft.WinJS.0.6.Debug_0.6.8229.0_neutral__8wekyb3d8bbwe package, the system failed to register the windows.repositoryExtension extension due to the following error: There are no more endpoints available from the endpoint mapper.
What's the solution?
what are your firewall settings? e.g.
1. Windows Key + R, type in services.msc
2. scroll down to "Windows Firewall", is it marked as disabled or not running. If so right click and select properties, set it to "automatic" and start the service.
Retry the deploy.