MSBuild & TeamBuild - BuildInParallel failing because of MSB3021 file permission violation

Question

I maintain the build of a fairly large piece of software, consisting of roughly 350 csharp projects. Our build time for a debug built clocks in at about 17 minutes.

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Answer 1

It looks like that your projects are configured to the same output directory. If you configure Project A and Project B to output to different directories, this would resolve this error.