Issues:
- Windows 10 microphone low volume or turning Microphone off
- Windows 10 Cortana changes volume to high while opening .
- Windows 10 Speech recognition app changes volume to low
Solution :
Install this update “KB4535996” to fix this issue. Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions. If you are using Windows Update, the latest SSU (KB4538674) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.
Download and install Windows update manually from “Microsoft update catalog” – http://www.catalog.update.microsoft.com/Search.aspx?q=KB4535996%20
