MAUI build errors : Duplicate 'global::System.Runtime.Versioning.TargetFrameworkAttribute' attribute

KallemSandeep-8232 36

Hi Team,

I am getting some strange build errors while I am rebuilidng the .NET MAUI mobile app solution. It worked fine till yesterday. All of sudden I am getting some strange errors now. I deleted .obj & bin folders and restrtaing visual studio & System multiple times but no use.

Here I am sharing the error screenshot for the refrence.

MAUI_Build_Error

This is one of those error type.

Duplicate 'System.Reflection.AssemblyCompanyAttribute' attribute
Duplicate 'global::System.Runtime.Versioning.TargetFrameworkAttribute' attribute
Duplicate 'System.Reflection.AssemblyInformationalVersionAttribute' attribute.

Could you please help me on this. I am unable to proceed with the MAUI build process now.

Thanks in advance.

Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 38,141 Reputation points Microsoft Vendor

2024-05-31T03:10:16.0433333+00:00
In order to investigate further, could you please provide the following information?

On which platform does this issue occur and what is the API Level?

Have you tried to Delete Assembly files from Release and Debug folder?

Can this issue be reproduced if a new project is created?

Your prompt reply will be highly appreciated.

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MAUI build errors : Duplicate 'global::System.Runtime.Versioning.TargetFrameworkAttribute' attribute