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In Microsoft Skype for Business Server 2019, when you run the bootstrapper.exe at the location \Program Files\Skype For Business 2019\Deployment, you receive the following error message:

Error encountered: Command execution failed: The given key was not present in the dictionary.


To fix this issue, install the December 2019 cumulative update 7.0.2046.151 for Skype for Business Server 2019, Core Components.

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