How to fix problems with Visual Studio 2010 Click Once publishing How to fix problems with Visual Studio 2010 Click Once publishing

How to fix problems with Visual Studio 2010 Click Once publishing

The Problem

So, you’re trying to publish a desktop app via the Visual Studio 2010 Click Once publishing, and you’re having problems with Visual Studio 2010 Click Once publishing?  Are you getting errors like the part below

Following errors were detected during this operation.
* [2/22/2012 1:45:21 PM] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
– Downloading Files/ReportingApp_1_0_0_8/App_Data/Reporting.sdf.deploy did not succeed.
– Source: System.Deployment
– Stack trace:
at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
at System.Deployment.Application.DownloadManager.DownloadDependencies(SubscriptionState subState, AssemblyManifest deployManifest, AssemblyManifest appManifest, Uri sourceUriBase, String targetDirectory, String group, IDownloadNotification notification, DownloadOptions options)
at System.Deployment.Application.ApplicationActivator.DownloadApplication(SubscriptionState subState, ActivationDescription actDesc, Int64 transactionId, TempDirectory& downloadTemp)
at System.Deployment.Application.ApplicationActivator.InstallApplication(SubscriptionState& subState, ActivationDescription actDesc)
at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
— Inner Exception —
– The remote server returned an error: (404) Not Found.
– Source: System
– Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

Even though you are not using a .sdf file

The Cause

Somewhere along the way you did have a .sdf file in the app_data folder, and the Click Once deploy manifest listed it. The manifest looks for it and does not find it, and would not find it anyway due to .sdf not being an accepted mime type on your server.

The Solution

Make sure that there are no .sdf files in the app_data folder, do a grep for any .sdf files, and then delete the web directories containing the files, the republish via click once.


Written By Steve French


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