devenv.exe hangs when simultaneously building same sources - by RichChom

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ID 775829 Comments
Status Closed Workarounds
Type Bug Repros 0
Opened 1/4/2013 11:32:52 AM
Access Restriction Public


Simultaneous builds of the same source trees (via ant's parallel task) will often result in an instance of devenv.exe hanging/spinning (consuming ~24% CPU).

The entire build consists of many C++ projects.  More often than not, the build of the first project is the one that hangs.
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Posted by Microsoft on 2/20/2013 at 6:14 PM
Hello, and thank you for the feedback. Parallel builds of the same source using custom tasks such as Ant’s Parallel task is not a scenario supported by MSBuild. Apache Ant's Parallel Task documentation ( specifically warns against that sort of usage as it must be explicitly supported by the tasks to be run in parallel.
Posted by Microsoft on 1/6/2013 at 11:06 PM
Thanks for your feedback.

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.
Posted by Microsoft on 1/4/2013 at 11:51 AM
Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(