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Docs > Troubleshooting > 'Add DevExtreme to the Project' menu item is unavailable
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V24.1
ASP.NET Core Controls
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DevExtreme Templates are unavailable
'DevExpress Template Gallery Failed' error occurs
DevExtreme tools and wizards are unavailable
'Upgrade DevExtreme Resources' menu item is unavailable
'Are you sure you want to upgrade DevExtreme resources in your project' dialogue is unavailable
'Add DevExtreme to the Project' menu item is unavailable
'Uncaught TypeError: $(…).dxWidget is not a function' error occurs
A drop-down editor does not show data
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'Add DevExtreme to the Project' menu item is unavailable

Note

Before you follow the troubleshooting process, ensure that you have .NET SDK 6.0 or later installed and you run Visual Studio 2022 or later. The support for older versions of .NET and Visual Studio has been discontinued in DevExpress ASP.NET Core Controls v22.2.

See Prerequisites and Installation for more information.

This issue occurs when a DevExtreme extension finds existing DevExtreme resources in the project. Check the project for DevExtreme resources and remove them completely. If this does not resolve the issue, follow the topics below:

DevExtreme Templates are unavailable

DevExtreme tools and wizards are missing