Microsoft Teams Microphone Not Working in Outgoing Calls? Here’s the Fix

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Quick Answer:
If your microphone works in incoming Microsoft Teams calls but not in outgoing ones, clear your Teams cache, test in Windows Voice Recorder, reinstall your audio driver, or try Teams Web in incognito mode. In most cases, a corrupted cache or a driver conflict causes this problem.

If you’ve experienced the odd situation where your mic works perfectly during incoming calls but goes silent in outgoing ones, you’re not alone. Many Teams users – especially on Windows 10 and Windows 11 – have run into this glitch. The good news? You can fix it yourself in just a few steps.

How to Fix Microsoft Teams Microphone Problems in Outgoing Calls

Below are proven troubleshooting methods that can restore your mic functionality for outgoing Teams calls.

1. Perform a Clean Boot

Stops background apps from interfering with Teams.

  • Press Windows + R, type msconfig, press Enter.
  • Go to Services, tick Hide all Microsoft services, and click Disable all.
  • Restart your PC, then test Teams.

2. Clear Microsoft Teams Cache

Removes corrupted temporary files.

  • Close Teams.
  • Go to:
    C:\Users\<YourUsername>\AppData\Roaming\Microsoft\Teams
  • Delete everything inside, then reopen Teams.
Guide to Clear the MS Teams Cache

3. Test Your Microphone in Windows Voice Recorder

Confirms if the problem is Teams-specific.

  • Open Voice Recorder.
  • Make a test recording. If it works, your mic is fine—focus on Teams fixes.
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4. Create a New Windows User Profile

Resets potentially corrupted user settings.

  • Create a new user in Windows settings.
  • Sign in, install Teams, and test an outgoing call.

5. Reinstall Your Microphone Driver

Fixes driver-related audio issues.

  • Open Device Manager.
  • Under Audio inputs and outputs, right-click your mic → Uninstall device.
  • Restart your PC to reinstall drivers automatically.

6. Use Teams Web in Incognito Mode

Bypasses app-related conflicts.

  • Open a private window in Chrome, Edge, or Firefox.
  • Go to teams.microsoft.com → Sign in → Test call.

7. Enable Enhanced Logging (Admin Feature)

Helps Microsoft Support identify the root cause.

  • Log in to Teams Admin Center.
  • Enable enhanced logging before raising a support ticket.

Why This Happens in Microsoft Teams

This issue often comes from a cache corruption, driver conflict, or profile configuration issue. It’s rarely the microphone hardware itself—especially if it works in other apps or during incoming calls.

Another useful guide - Fix the Microsoft Teams Auto Away Status

Pro Tip for Teams Users

Always keep Windows, Teams, and your audio drivers up to date. Regular updates prevent many glitches before they start.

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