The Telerik Platform product is retired.Learn more

Cannot Install the AppBuilder Extension for Visual Studio


Service Code (AppBuilder)
Code (AppBuilder) client Extension for Visual Studio


The latest VSIX package for the AppBuilder extension for Visual Studio cannot be installed.

Error Message

The file is not a valid VSIX package.

Error log

Date/Time - Microsoft VSIX Installer
Date/Time - -------------------------------------------
Date/Time - Initializing Install...
Date/Time - Microsoft.VisualStudio.ExtensionManager.InvalidExtensionPackageException: 
The file is not a valid VSIX package. ---> System.IO.FileFormatException: File contains corrupted data.


During the download and installation processes some antivirus programs and firewalls block or delete some of the files that are included in the AppBuilder.vsix archive.


To resolve the issue, try the following solutions:

Now you should be able to install the AppBuilder extension for Visual Studio.

Contact us: +1-888-365-2779
Copyright © 2016-2018, Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.