[Solved] Logitech Bluetooth Wireless Headset H800 Microphone Not Working

Problem: Logitech Bluetooth Wireless Headset H800 microphone reported stopped working on Windows while audio playback remains functional.

Content Summary

Solution 1: Run Built-in Windows Recording Audio and Bluetooth troubleshooters
Solution 2: Rollback or update Logitech Bluetooth Wireless Headset H800 driver
Solution 3: Re-pairing Logitech Bluetooth Wireless Headset H800 with nano USB dongle
Solution 4: Install and Reinstall Media Track Control Software
Reference

Solution 1: Run Built-in Windows Recording Audio and Bluetooth troubleshooters

Step 1: Press Windows key + R to open Run box.

Step 2: Type control.exe /name Microsoft.Troubleshooting in the Run box and press Enter to open the Troubleshooting tab of the Settings app.

Step 3: Scroll down to Fix and find other problems, select Recording Audio, and then click Run the troubleshooter button.

Step 4: Wait until the scan is complete then click choose which device you want to troubleshoot and click Next.

Step 5: Click on Apply this fix if any viable fix is identified.

Step 6: Restart the computer.

Step 7: If the issue persists and you’re using Bluetooth to connect Logitech Wireless Headset H800, Back to troubleshooting screen, click on Bluetooth under Find and fix other problems and choose Run the troubleshooter.

Solution 2: Rollback or update Logitech Bluetooth Wireless Headset H800 driver

Step 1: Press Windows key + R to open Run window.

Step 2: Type devmgmt.msc and press Enter to open Device Manager. Choose Yes if prompted by UAC (User Account Control).

Step 3: Expand Sound, video, and game controllers drop-down menu to locate the Logitech headset entry.

Step 4: Right-click on it and choose Properties.

Step 5: Go to the Drivers tab, click the Rollback Driver button, and wait for the older version to be installed.

Step 6: Restart the computer.

Step 7: If the issue remains after the restart, back to Properties screen of the headset, Drivers tab, click on Update Driver button.

Step 8: Restart the computer.

Step 9: If the driver already has the latest version installed, click on Uninstall Device and reboot the computer to force Windows to reinstall the driver at the next startup.

Solution 3: Re-pairing Logitech Bluetooth Wireless Headset H800 with nano USB dongle

Solution 4: Install and Reinstall Media Track Control Software

Step 1: Download Wireless Headset H800 Media Track Control Software.

Step 2: Click on the executable to start the installation process.

Step 3: Restart the computer.

Reference

Logitech Support: MICROPHONE NOT WORKING ON THE H800 HEADSET
Logitech Community: H800 Headset – Mic not working
Microsoft Community: Logitech Microphone not working on Windows 10 and no driver for it.