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Hi @shadow_scythe666 ,
Welcome to Microsoft Q&A!
Are you using the latest Visual Studio version 17.8.5? Is the project template you selected Mobile App (Xamarin.Forms)?
Have you tried to create other projects, such as Android XAML App (Xamarin.Forms)? Will the error happen?
Please open the Visual Studio Installer > Modify > Workloads tab > ensure that the .NET Multi-platform App UI development workload is installed.
Besides, you can also try repairing your VS via Visual Studio Installer > More > Repair.
Sincerely,
Anna
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