If nuget packages are updated, the minimum Visual Studio version needs to be updated to match in the .vsixmanifest. Ex. Microsoft.VisualStudio.SDK 16.9.31025.194 = Minimum Visual Studio version needs to be 16.9 # Installation In Visual Studio Tool->Options->Environment->Extension Add an Addition Extension Gallery. Point the URL to the AtomFeed of where UnrealVS.vsix is synced ex. Name: UnrealVS URL: file:///D:/dev/ue5main/Engine/Extras/UnrealVS/VS2022/AtomFeed.xml # Debugging In order to debug UnrealVS.vsix: - Set the Startup project to UnrealVS.2022 - Update the Debug properties for the UnrealVS.2022 csproj - Start external program set to: C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\IDE\devenv.exe - Command line arguments set to: /rootsuffix Exp