Can’t Unmute Your Mic In Microsoft Teams? 5 Fixes To Check

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Are you desperately trying to understand why you can’t unmute your mic in Microsoft Teams?

You’re not alone! If I told you how many people I’ve seen struggle with this same issue, you probably wouldn’t believe me.

I get how annoying it can be to try to speak your mind during a meeting, only to be silenced by a malfunction on your end.

But don’t worry, you came to the right place for solutions. Below, you’ll find a list of many fixes you can check to solve this issue once and for all.

The 5 main things to check when you can’t unmute your mic in Microsoft Teams are your Firewall permissions, your microphone settings, and your software version. If that doesn’t work, you can also try uninstalling Teams, and clearing the program’s cache.

Read on to make your voice heard!

#1 Check Your Firewall Permissions

I’d like us to start off by checking how strict your Firewall permissions are.

These days, getting viruses and malware is very easy, as even the most innocent of downloads could be carrying a dangerous file. Cybercriminals are constantly trying to steal information from unwary internet users, and sometimes we may notice something’s wrong when it’s already too late.

This is why security software developers are constantly creating and improving Antivirus programs to stay two steps ahead of those who mean the average person harm. And while these tools are great for staying protected, they could also explain why you can’t unmute your mic in Microsoft Teams.

Why? Simple.

Teams is a communications platform, and while it’s licensed and managed by Microsoft (which is as safe as it can get), most Antivirus software errs on the side of caution, blocking most incoming and outgoing features.

Now, does this mean you’re stuck having to choose between safe browsing and unmuting your mic? Absolutely not. All you have to do is create an exception for Microsoft Teams on your favorite Firewall.

Solution: This process should look very similar across different developers. For this example’s purposes, I’ll show you how I do it on Bitdefender. First, we’ll create an exception for Microsoft Teams, and then we’ll allow microphone and webcam access.

To create Firewall exceptions:

  1. Open the program and go to “Protection”
  1. Locate “Firewall” and click on “Settings”
Create Firewall exceptions on Bitdefender Firewall
Take some time to learn what your Firewall can do for you
  1. In the new menu, navigate to the “Rules” tab, locate “teams.exe”, and click on the arrow pointing downwards in the right-most area of the screen
How to add rule exception for Teams on Bitdefender
  1. On the dropdown menu, toggle on “Access” to allow Microsoft Teams to send and receive information over the internet
How to allow access for Teams on Bitdefender
This will grant Teams full clearance to send and receive information over your network

To allow mic & webcam access:

5. On Bitdefender, click on the “Privacy” tab

How to edit privacy settings on Bitdefender

6. On the new window, select Settings on “Video & Audio Protection”

How to edit Video & Audio Protection settings on Bitdefender

7. Go to the “Audio Protection” tab, and select “Add application”. Once the pop-up window opens, find Microsoft Teams on your files and select it

How to add Teams to audio exceptions on Bitdefender
Doing this lets Teams use your mic and webcam freely

#2 Check Your Microphone Settings

If your Firewall was not the issue, we can safely move on to taking a look at your microphone settings.

No matter how many times you try to unmute your mic, if you have not selected the right one, you’ll never be able to do it successfully. I know this might sound like something obvious, but you wouldn’t believe how many times I’ve seen people struggle with it.

This is much more likely to be a problem when you have multiple devices with microphones connected to your PC, as some might be automatically disabled. The good news is that changing your preferred microphone on the Teams app is super easy.

Solution: Here’s what you have to do:

  1. Join any call you’re being invited to on the Teams app
  2. Find the three horizontal dots located in the top-right area of the call’s window and click on them
  3. From the dropdown menu that appears, select “Device Settings”, and then on the “Microphone” section, find and select your preferred recording device
How to change microphones in Microsoft Teams
If you’re not sure which mic to use, try all that are available until one allows you to unmute

By selecting the right microphone, you should no longer be having unmuting issues.

#3 Check Your Software Version

Next, let’s make sure you’re running the latest Teams version available.

Believe it or not, keeping your favorite apps updated is essential to preventing a cascade of technical issues as time passes. The reasoning behind this is very simple. Newer app versions are always designed with the latest device software in mind.

Moreover, since housing several versions of a platform is expensive and pointless, most companies stop supporting the oldest one when a new one is released to the market.

Accidentally using an older version of the program could explain why you can’t unmute your mic in Microsoft Teams, as well as other issues, such as having the platform keep going offline.

And while normally this isn’t something you’d have to worry about, sometimes bugs and weak networks can get in the way of automatic updating.

Solution: To fix this, you’ll want to manually install the latest version of Microsoft Teams. Since PCs are much more reliable when it comes to being consistent with their updates, here’s how to go about it on iOS and Android mobile devices instead:

For iOS:

  1. Open “App Store”
  1. Locate your profile button in the upper right corner of the screen, and tap on it
  1. Find the “Update All” button. This should update Microsoft Teams if there’s a newer version available
How to update all apps on iOS
This would be a good time to update any apps you have pending

For Android:

  1. Go to Play Store and click on your profile, located in the upper-right corner of your screen
  1. Select “Manage apps & device”
  1. If you just want to update Microsoft Teams, select it and update it individually
  1. If you want to update all pending apps, select “Update All”
  1. Wait for the updating process to be completed

#4 Uninstall Microsoft Teams

Moving on, let’s try something a little more permanent.

Sometimes, no matter what you do, certain troublemakers are too deep-rooted to be corrected. In cases like that, you’ll want to wipe all traces of the platform from your devices’ memory. This can help patch up anything that needs attention and reload several essential resources from scratch.

A lot of people tend to avoid doing this out of fear of losing their files and conversations, but more often than not, these are backed up in the cloud, so they should be waiting for you when you re-download.

Solution: Here’s how you can go about this on PC and Mac:

Windows PC:

  1. Press the Windows key on your computer and type “Microsoft Teams”. Then, right-click on it.
  2. Select “Uninstall” from the drop-down menu. A new window will pop up.
  3. Search for Microsoft Teams and double-click on it to uninstall it.
  4. Enter Microsoft Team’s website and click on “Download for desktop”.
Install Microsoft Teams on your Windows PC


  1. Open Finder.
  2. Go to the Applications folder and search for Microsoft Teams.
  3. Drag it to the trash bin icon.
  4. If asked, enter your administrator login credentials.
  5. Click on “Finder” and select “Empty Trash”.
  6. Download the app again by going to Microsoft Store’s website or opening the App Store.

#5 Clear Microsoft Team’s Cache

Last, but definitely not least, let’s check your cache.

Whether you’re new to the term or simply need to refresh your memory, I’m glad to shed some light on the concept.

In a nutshell, your cache is where critical information is stored. In it, you’ll find resources, login credentials, downloaded files, and much more. By keeping this data available at all times, Teams and all your other apps can launch much quicker and offer you a smoother experience.

As you can imagine, in 99% of cases leaving your cache alone is for the best. But now and then, a corrupted file can be stored within it accidentally, causing a world of trouble.

In that scenario, clearing your cache is the way to go, and luckily, it’s very easy.

Solution: Here’s what you have to do:

Windows PC:

  1. Quit the app
  2. Type “Run” on the search bar at the bottom of your screen. Then, hit Enter.
  3. Type “%appdata%\ Microsoft\Teams”
  4. Click on “Select All” at the top of your screen and click on “Delete”.


  1. Fully close Microsoft Teams.
  2. Open Finder and click on “Go”.
  3. Select “Go to Folder” from the drop-down menu.
  4. Type “~/Library/Applications Support/Microsoft” in the text field and click on “Go”.
  5. Right-click on the Teams folder and click on “Move to Trash” or “Move to Bin”.
  6. Click on the magnifier glass at the top of your screen to open the Spotlight Search.
  7. Type “Keychain” and select “Keychain Access”.
  8. Search for Microsoft Teams and right-click on “Microsoft Teams Identities Cache”. Then, select “Delete”.


All done!

I know how intimidating it can be to think about tackling your own technical difficulties, but aren’t you glad you did?

I hope this piece has helped you realize your true potential, and can encourage you to keep improving your troubleshooting skills every day.

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Best of luck to you.