How to re-install deleted microphone device in windows 10

Jan 30, 2019
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No audio on Acer laptop. Somehow the microphone device was deleted. The volume shows 100% and speakers are Realtek high definition.
 
Jan 30, 2019
2
0
10
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After many hours of research I answered the question. It seems that an Intel audio driver was incorrectly pushed to devices via Windows Update in January 2019. To fix it see the link below.
https://blogs.msdn.microsoft.com/matthew_van_eerde/2018/10/12/if-windows-update-sent-you-intel-audio-controller-version-9-21-0-3755-by-mistake-uninstall-it/. I followed the instructions and it worked. I have audio again.
 
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