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When deploying a build to IOS simulator most often I end up receiving an error

Could not attach to pid : errNumber unable to attach

Stopping build and re-running deploys it without any error.

  • I would like to know why this error is being caused?
  • How I can avoid it?
  • If its unavoidable any faster way other than rebuilding and deploying?
Jerin
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  • Faced the same issue when multiple projects were open all had apps being run on the simulator. You could check if this is your case! – carbonr Nov 08 '17 at 16:05
  • Nope had only one xcode project opened whole day still received the error. – Jerin Nov 08 '17 at 16:27
  • Please file a bug report with the output from `xcrun simctl diagnose` right after it happens, along with the output from `sudo sysdiagnose -q`. – russbishop Nov 14 '17 at 07:10

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