Microsoft Teams Spell Check Not Working? Here’s How to Fix It

If you’ve ever sent a message in Microsoft Teams with a glaring typo and only noticed after hitting Enter, you know how frustrating it is when spell check quietly stops doing its job. The red underline just disappears one day, and suddenly every message feels like a potential embarrassment.

I’ve run into this myself, and I’ve seen it pop up constantly in Microsoft’s own Q&A forums. The good news? It’s almost always fixable. In this tutorial, I’ll walk you through every method that actually works — from the simple one-click toggle to clearing the Teams cache and fixing Windows language settings.

Let’s find out why Microsoft Teams spell check not working by trying these 7 methods.

Why Does Teams Spell Check Stop Working?

Before jumping into the fixes, it helps to understand why this happens. Microsoft Teams doesn’t have its own built-in spell checking engine in the traditional sense. It relies on a combination of:

• The Teams app settings (Editor spell check toggle)
• Your Windows or macOS system language settings
• The Teams cache, which can get corrupted over time

So if any one of these three things goes out of sync, spell check can silently break. That’s why clearing the cache sometimes fixes it temporarily, but then it breaks again after an update — Teams pulls down new files that reset something in the background.

Now let’s fix it properly.

Fix Microsoft Teams Spell Check Not Working

Now I will show a different way to fix Microsoft Teams Spell Check; you can check based on your requirement.

Method 1: Enable Spell Check in Teams Settings

This is the first thing to check. It sounds obvious, but the spell check toggle in Teams can get turned off without you realizing it, especially after an update.

Here’s what to do:

1. Open Microsoft Teams on your desktop.
2. Click the three-dot menu (…) at the top right of the window (next to your profile picture).
3. Click Settings.
4. Under the General tab, scroll down to the Language section.
5. Look for Editor spell check — make sure the checkbox is ticked/enabled.
6. If you make any changes here, close and reopen Teams completely.

Once Teams restarts, open any chat and type a deliberately misspelled word like “helllo” or “teh”. You should see a red underline appear within a second or two.

If it’s already enabled but still not working, don’t worry — move on to the next method.

Method 2: Check Your Language Settings in Teams

Sometimes spell check is technically on, but Teams is checking the wrong language. If your system says one language and Teams is set to another, the checker gets confused and either underlines everything or nothing at all.

Here’s how to fix it:

1. Go to Settings > General in Teams (same as above).
2. In the Language dropdown, make sure it’s set to your actual working language — for example, English (United States) or English (United Kingdom).
3. If you change the language, Teams will usually prompt you to restart — go ahead and do that.
4. After restarting, test it again in a chat.

One thing I’ve noticed: if you’re in an organization where your IT admin has configured language policies, this dropdown might be greyed out. In that case, skip to Method 5 (contacting IT).

Method 3: Clear the Microsoft Teams Cache

This one is a lifesaver. A corrupted cache is one of the most common reasons spell check stops working in Teams — especially after an update. Clearing it forces Teams to rebuild everything fresh.

On Windows:

1. Completely quit Teams. Right-click the Teams icon in the system tray (bottom right) and select Quit.
2. Press Windows + R to open the Run dialog.
3. Type %appdata%\Microsoft\Teams and press Enter.
4. Inside this folder, delete everything except the meeting-addin folder (you can leave that one alone).
5. Restart Teams.

When Teams relaunches, it’ll rebuild the cache automatically. This takes a minute or two on first load.

On Mac:

1. Quit Teams completely from the menu bar or Dock.
2. Open Finder, click Go in the menu bar, then Go to Folder.
3. Type ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams and press Enter.
4. Delete the contents of that folder.
5. Also navigate to ~/Library/Containers/com.microsoft.teams2 and clear that too.
6. Relaunch Teams.

After doing this, spell check usually starts working again right away. If it breaks again after the next update prompt, clear the cache once more — it’s an annoying cycle some users have reported, but it’s a reliable workaround until Microsoft patches the underlying issue.

Method 4: Fix Windows Typing Settings

If clearing the cache doesn’t do the trick, the problem might be sitting in Windows itself rather than in Teams. Teams relies on Windows‘ built-in typing features to catch spelling errors, so if those are turned off, Teams can’t do its job.

Here’s how to check:

1. Click Start and open Settings.
2. Go to Time & language > Typing.
3. Make sure these two options are turned On:
   • Autocorrect misspelled words
   • Highlight misspelled words
4. Close Settings and reopen Teams.

This step catches a lot of people off guard because it’s not inside Teams at all — it’s a Windows-level setting. I’ve seen cases where a Windows update silently toggled these off.

Method 5: Install the “Basic Typing” Language Feature (Windows)

Here’s one that’s a bit less obvious. If your Windows language pack is missing the Basic typing feature, spell check simply won’t work — even if everything else looks correct.

To check and install it:

1. Go to Settings > Time & language > Language & region.
2. Find your preferred language (e.g., English United States) and click the three-dot menu next to it.
3. Select Language options.
4. Under Language features, check if Basic typing is listed as installed.
5. If it says Not installed, click the download/install button next to it.
6. Wait for it to install, then restart your PC and test Teams again.

This is especially relevant if you’ve recently reset your PC, upgraded Windows, or switched language packs. The core Windows language might be there, but the typing-specific components sometimes don’t come along for the ride.

Method 6: Try Teams on the Web

If nothing above has fixed it yet, here’s a quick way to check whether the problem is with the desktop app specifically:

1. Open your browser (Chrome or Edge work best).
2. Go to teams.microsoft.com and sign in.
3. Try typing in a chat and see if spell check works.

The web version of Teams uses your browser’s built-in spell checker, which tends to be more reliable. If spell check works in the browser but not the desktop app, that confirms the issue is with the app itself — and you can try reinstalling Teams as a next step.

Method 7: Reinstall Microsoft Teams

If you’ve tried everything above and spell check is still broken, a clean reinstall usually does the trick.

1. Go to Settings > Apps > Installed Apps (Windows 11) or Control Panel > Programs (Windows 10).
2. Find Microsoft Teams and uninstall it.
3. Restart your computer.
4. Download the latest version of Teams from microsoft.com/en-us/microsoft-teams/download-app.
5. Install and sign back in.

When you reinstall, Teams comes with a fresh set of settings — no corrupted cache, no broken language files. In most cases, spell check works perfectly right after a clean install.

Quick Fixes Summary

Here’s a cheat sheet if you want to try things in order of effort:

• Step 1 — Enable spell check in Teams Settings > General > Editor spell check
• Step 2 — Set the correct language in Teams Settings > General > Language
• Step 3 — Clear the Teams cache (Windows: %appdata%\Microsoft\Teams, Mac: ~/Library/Containers/com.microsoft.teams2)
• Step 4 — Turn on Autocorrect and Highlight misspelled words in Windows Settings > Typing
• Step 5 — Install “Basic typing” under your language pack in Windows Language & Region settings
• Step 6 — Try Teams on the web to isolate if it’s a desktop app issue
• Step 7 — Reinstall Teams completely

Start from the top and work your way down. For most people, Methods 1, 2, or 3 solve it immediately.

A Note for Mac Users

Spell check behavior on Teams for Mac is a bit more finicky. Some users report that it keeps reverting — the language setting switches back on its own after a while. If that’s happening to you, check that your macOS system language and your Teams language setting match. Go to System Settings > General > Language & Region and make sure your primary language is what you want Teams to use.

Also, some Mac users have found that spell check works in pop-out chat windows even when it doesn’t work in the main Teams window. If you need a quick workaround, double-click on a chat to pop it out into its own window while you wait for a proper fix.

What If It’s an IT Policy Issue?

In some organizations, spell check settings are managed by IT admins through group policies. If you’re on a company-managed device and nothing you try seems to stick, there’s a chance your organization has locked certain settings. In that case, the best move is to raise a ticket with your IT helpdesk and ask them to check if spell check is restricted at the policy level.

Spell check in Teams is one of those things that works quietly in the background — until it doesn’t. When it breaks, it usually comes down to one of the issues covered above. Work through the methods in order, and you’ll most likely have it sorted in under five minutes.

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