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Keywords: mutex; error 258
Exact Error Msg: Failed to grab execution mutex. System error 258
Resolution: Another MSI Installer is running and has locked the MSI execution process. Wait for that process to complete before launching another application. Instance: In this instance the error occured with a MDT deployment of a fully scripted ZTI build deploying MS Visio, and the installer failing becasue another application was still running in the background)
Tested: Yes
Fixed: Yes
URL Reference:

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