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Question
Saturday, January 16, 2016 7:39 PM
Hi all,
I'm just getting started learning C# and have installed VS2015 COmmunity and Express (just in case one was different). When I try and open the designer page I get this error message:
System.Exception
To install this application you need either a Windows developer license or a sideloading-enabled system.
Deployment of package 34d70666-fd30-46e4-86b3-bdb2a62c4886_1.0.0.0_x86_NorthAmerica_8wekyb3d8bbwe failed because no valid license or sideloading policy could be applied. A developer license (http://go.microsoft.com/fwlink/?LinkId=233074) or enterprise sideloading configuration (http://go.microsoft.com/fwlink/?LinkId=231020) may be required.
** at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32& processId, Object& processData)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)**
** at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.Initialize()**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFactory.Initialize()**
** at Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.CreateObjectFactory(IIsolationTarget isolationTarget, IObjectCatalog catalog)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.CreateLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken)**
** at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.<>c__DisplayClass10_0`1.<StartTask>b__0()**
** at System.Threading.Tasks.Task`1.InnerInvoke()**
** at System.Threading.Tasks.Task.Execute()**
I've registered and paid for a developer licence, but VS doesn't seem to be recognizing it. What am I doing wrong?
Mike
All replies (3)
Monday, January 25, 2016 5:58 PM âś…Answered | 2 votes
Thanks for your reply Jack. The problem was that I could not install the developer licence that I'd paid for. I did a lot of searching on the Internet and eventually found the answer that walked me through installing the licence. I am new to C# and was following a textbook which didn't have the instructions on obtaining and then installing the developer licence. This was before I could even start developing apps!
Anyway, all sorted now, thanks very much for your help,
Mike
Tuesday, January 19, 2016 2:37 AM
Hi Mike,
>>When I try and open the designer page I get this error message: System.Exception
To install this application you need either a Windows developer license or a sideloading-enabled system.
Which kind of app did you open, Windows Phone or others?
(1) I know that you install the VS2015 community and express version, but please make sure that you could create the same simple app as the one you opened in your current VS version, so we could know that whether you forget to install the specific package.
(2) Which kind of system did you have, windows 10 or others? We have to make sure that your windows support this kind of apps. For example, we need to run the UWP windows 10 app in the windows 10.
(3) Based on the above error, I met this kind of error before when one customer deploy one unversal app on Device, the fix method is that unlocking the phone.
Reference:
If still no help, please feel free to share us the latest information about this issue.
Best Regards,
Jack
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Tuesday, January 26, 2016 2:17 AM
Hi Mike,
Glad to know that you have resolved this issue, if so, could you mark your helpful reply as the answer? So it would be helpful for other members who get the same issue, and I could close this case for you.
Have a nice day,
Jack
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