My microphone is off or not working

The short answer

Open Windows Settings, Privacy and security, Microphone, and make sure microphone access is on for apps and for Perfect Dictation. Settings in the app has a mic test.

1. Allow the microphone in Windows

Windows 11: Settings, Privacy and security, Microphone. Switch on Microphone access, Let apps access your microphone, and Perfect Dictation in the list.

Windows 10: Settings, Privacy, Microphone. Switch on Allow apps to access your microphone, and Perfect Dictation in the list.

2. Check Windows hears it

Open Settings, System, Sound, and look under Input. Speak and watch the level bar. If it does not move:

Check the microphone is plugged in, or the headset is connected and switched on.
Check for a mute switch on the headset, the cable, or the keyboard (many laptops have a microphone mute key with a light).
Choose the right input device from the list.

3. Pick it in Perfect Dictation

Open the app's Settings, choose your microphone, and run the mic test. The level should move when you speak. See Which microphone does it use?

4. Is another app holding it?

Some video call apps take exclusive control of the microphone while a call is open. Close the call, or check the call app's own audio settings, then try again.

Bluetooth headsets

When a Bluetooth headset's microphone is in use, Windows switches it into a call mode, which can sound quieter and less clear. That is normal. If accuracy drops, a wired headset or USB microphone avoids it.