Build error: Could not load file or assembly '...Microsoft.Build.Tasks.v4.0.dll'

Question & Answer Builds
1

From @Lux2057 on Mon Dec 05 2016 09:57:58 GMT-0500 (EST)

# Bitrise Build Issue Report template

Description of the issue

I got error with NuGet download. It seems that the service can’t download Microsoft.Build.Tasks.v4.0.dll. On local machine project works fine and Visual Studio creates package.

Environment:

Where did the issue happen?

Xamarin Stable with Xcode 8.1, on macOS 10.12 (Sierra)

Which build Step causes the issue and which version of the step?

xamarin-archive@1.1.1

Reproducibility

  • Does a “Rebuild” help? (You can trigger a rebuild from the Build’s page, by clicking the “Rebuild” button in the top right corner of a finished build) : NO
  • Does a rebuild without caches help? (You can remove the Cache:Pull and Cache:Push steps temporarily to not to use the cache, or you can delete all the caches on the Settings tab of the app. : NO
  • If it’s an issue which happens sporadically, what’s the frequency? (e.g. Once a day ; about x% of the builds) : every build
  • Does upgrading the build Step to the latest version help? : NO
  • When did the issue start? : at first app build

Build log

4c070429178098e6.zip



Copied from original issue: https://github.com/bitrise-io/build.issues/issues/18

2

From @godrei on Wed Dec 21 2016 05:05:29 GMT-0500 (EST)

Hi @Lux2057 ,
sorry for my late response, could you please try the solutions mentioned in this STO thread?

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From @Lux2057 on Wed Dec 21 2016 08:44:18 GMT-0500 (EST)

Hi @godrei, thanks, it helped. I think we can close this issue.

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From @godrei on Wed Dec 21 2016 09:13:12 GMT-0500 (EST)

@Lux2057 ,
could you please link which solution worked for you? It may help others with this issue…