Error 5 Unknown build error, 'Binary format of the specified custom attribute was invalid.' by Eddy Tick

We have been unable to reproduce this error. Speaking with the msbuild team, the only suggestion for troubleshooting this is to build your project from the VS command line using msbuild.exe and specifying diagnostic verbosity. "/verbosity:diag". This will emit lots of build time logging, but you'll have to do the trial and error process of adding and removing projects to find the issue. The error alone doesn't allow us to determine the cause and we don't have a hisotry of this error to learn from. ------ We appreciate the feedback. However, we were not able to reproduce the issue based on the description. Attaching a simple repro example would help the investigation. Also, if it's easy to very the repro on more than one machine, this would rule out a configuration or environmental problem on the affected machine.    Thank you.
–WPF Team.

Still no comment?, please update the status.
Recreated the project and after that again the same error.

Need a solution or a workaround.

regards

Eddy

Hi,

I hope this will be soon because i must update the solution to the new .Net version.
Even creating a new project and then copying the files from the old project to the new project gives this error.

regards

Eddy

Hi Eddy,

Thanks for your reply. We are rerouting this issue to the appropriate group within the Visual Studio Product Team for triage and resolution. These specialized experts will follow-up with your issue.

When i create a simple project there is no problem.
The project that failes is a rather big project with 34 projects in 1 solution.
The only project that has this error is the main WPF application.
This has many third party references so difficult to share this with you.

Can you give any feedback on why this error is given.

regards

Eddy

Thank you for submitting feedback on Visual Studio and .NET Framework. In order to efficiently investigate and reproduce this issue, we are requesting additional information outlined below.

Could you please give us a demo project to demonstrate this issue so that we can conduct further research?

We look forward to hearing from you with this information.

Microsoft Visual Studio Connect Support Team

Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)