Suppose you opened the Microsoft Teams app to join a meeting, and instead of signing you in, the app got stuck on an error screen showing the error code 42b. Unable to join in the meeting, you’d be furious, right?
As a regular Microsoft Teams user since the pandemic forced us to stay at home, I often faced the error code 42b like you. After wasting hours to find a solution, I finally found the reasons behind this error and fixed them successfully.
So, What is Microsoft Team’s error code 42b?
Stay with me through the post to identify and fix the issues behind Microsoft Teams’ error code 42b.
What causes Microsoft Team Error 42b?
The Microsoft Teams error code 42b is mainly caused by VPN and Proxy Server usage and junk cache files. Also, unlisting the Microsoft account credentials in Windows account manager and several active sessions of the app trigger the error code 42b in MS Teams.
I’ve found several reasons behind the Microsoft Teams’ error code 42b. They are mainly related to your device’s internet and Windows settings.
You’ll find all the possible reasons behind the error code of MS Teams below in my listing. Find the one behind your inconvenience among them.
So, the reasons behind Microsoft Teams’ error code 42b are:
Interruptions and Temporary Glitches in MS Teams’ Background Process
If the Microsoft teams’ background processes get interrupted by some other app’s processes at the startup, it can not perform smoothly and displays the error code 42b.
The same goes for the temporary glitches of windows, which also affects the teams’ background processes and forces it to show the error code 42b.
A business communication platform like MS Teams requires running various processes in the background to keep every option available at hand. But, if it has to shut some processes down because of other apps or a ram optimizer, it malfunctions and gives you the error code 42b.
Check out our separate post on how to Delete a Conversation in Microsoft Teams.
VPN Usage
So, if you’re using a VPN to log into MS Teams, that’s maybe the root of error code 42b in MS Teams.
MS Teams requires real-time connectivity with it’s server to fetch the information of your account. Using VPN delays this connection and interrupts the real-time data exchange between your MS Teams client and the server. That’s why using a VPN triggers the error code 42b and blocks you from signing in to your MS Teams account.
Junk Cache Files
Every app creates temporary cache files to operate it’s processes in Windows. Running a versatile app like Microsoft Teams for a moderate amount of time piles up a massive junk of cache files.
After completing a session or changing your credentials, like the password, previous cache files of the app become obsolete and interrupt the background processes of the app.
This conflict might be the reason behind the error code 42b on MS Teams and causes the difficulties of signing in to the app.
Unlisted Microsoft Teams Account in Windows
If your Microsoft Teams account is not listed in the Windows account manager or there’s a syncing complication between them, you might face the MS Teams error code 42b.
MS Teams and Windows accounts manager syncs information on your pc. If the syncing process is interrupted, it blocks your account from logging in to the app and shows the error code 42b.
Follow our guide to How to Export Chat History in Microsoft Teams.
Multiple Active Session of the Teams App
If you’re logged in to MS Teams on multiple devices, and the sessions are active, the MS Teams can’t sync your account’s multi-device activities and displays the error code 42b.
That’s why logging to MS Teams from more than one device will end in receiving the error code 42b on Microsoft Teams app.
How to Fix Microsoft Teams Error Code 42b
Alright, I won’t keep you waiting anymore with my technical mambo-jumbos as you have a meeting to attend.
Before you jump to apply the solutions, I suggest you take things slowly as a wrong step could overcomplicate your issues.
So, without any further adieu, let’s get your error 42b fixed.
Here are the methods to fix the Microsoft Teams error code 42b:
1. Restart Microsoft Teams
Sometimes the Microsoft Teams misbehaves and displays the error code 42b because of some minor temporary glitches. They occur because of overlapping background processes in Windows.
Closing and reopening the app fixes these minor glitches and restarts the background process of the Teams app smoothly.
Follow these steps to quit the Microsoft Teams app properly:
- Right-click on the Windows Taskbar.
- Click on Task Manager.
- Find the primary process of Microsoft Teams and click on it.
- Click on the End task option on the bottom right corner of the screen; it’ll kill the app.
Now click on the Microsoft Teams shortcut to rerun the app and see if the error still occurs.
2. Turn Off VPN and Proxy Server
Microsoft Teams is a real-time business communication platform. It requires simultaneous connectivity with the remote server to perform the user’s commands. It’s connectivity gets interrupted by a VPN or proxy server network because they delay the connection.
So, to avoid inconveniences like MS Team error code 42b, turn off your VPN and proxy servers in your network settings. It’ll also help you avoid other error codes in the Teams app. Use a direct connection without a proxy server or a VPN to avoid issues like it.
Follow these steps to turn off proxy settings in your internet settings:
- Press Win+R key and open the Run dialog box.
- Type inetcpl.cpl inside the box and press Enter.
- Go to the Connections tab of the pop-up window and click on LAN settings.
- Put a checkmark on Automatically detect settings, and uncheck Use a proxy server for your LAN.
- Press OK to apply the settings.
It’ll disable the proxy servers in your internet settings. Now, run the Microsoft Teams app and see if the error is fixed.
But before that, go through our epic guide on why Microsoft Teams Can’t Change Status from Offline.
3. Clear MS Teams’ Cache Files
Clearing the cache files of the MS teams app after you change your Microsoft account password can solve the Microsoft Teams error code 42b. It’ll clear all the previous temporary info about your log-in sessions and will reinitiate the app’s processes.
Before cleaning the cache of Microsoft Teams, end it’s process from the task manager by following these steps:
- Right-click on the Windows Taskbar.
- Click on Task Manager.
- Find the primary process of Microsoft Teams and click on it.
- Click on the End task option on the bottom right corner.
To clear the cache files of the MS app on your pc, follow the steps below:
- Right-click on the taskbar.
- Click on Task Manager.
- Search the process of Microsoft Teams and click on it.
- Click End task on the lower-right corner of the window.
- Press Win+R on your keyboard to open the Run program.
- Type %appdata%\Microsoft\teams inside the box and hit Enter key.
- Delete every folder of the directory.
- Restart your pc.
Now, open MS Teams again and check if the error code still appears.
4. Re-connect Microsoft Teams Account in Windows
Reconnecting your MS Teams account in your Windows account manager solves the Microsoft Teams error code 42b. It authorizes the Microsoft Teams to account under the account manager.
- To reconnect your MS Teams user accounts in Windows 10 Settings, follow these steps:
- Click on the Windows Start icon on the taskbar.
- Click on Settings.
- Go to Accounts and select Access work or school.
- Look for the account you are using to log in to Microsoft Teams.
- Disconnect the MS Teams account and confirm by clicking Yes.
- Click on the add button again to add the account.
Now, clear the cache of the Microsoft Teams app and re-open it to check if the issue is solved.
5. Quit All Active Sessions of the Microsoft Teams App
Suppose you’re using Microsoft Teams on multiple devices, and the sessions are active simultaneously. In that case, the MS Teams app struggles to sync your multi-device activities and displays the error code 42b.
So, to fix the error code 42b in Microsoft Teams, quit all the active sessions of the app except the one on your primary device by logging your account out of them.
6. Uninstall & Reinstall MS Teams
Uninstalling the Microsoft Teams app entirely and reinstalling it can also solve the error code 42b on Microsoft Teams.
Follow these steps to uninstall the Microsoft Teams app from your device:
- Press Win+R keys on your keyboard to open the Run dialog box.
- Type control to open the control panel.
- Click on Programs and features.
- Locate Microsoft Teams and right-click on it.
- Click Uninstall.
- Confirm by clicking Yes.
- Follow the on-screen instructions to uninstall Microsoft Teams from your device and restart your pc.
- Press Win+R on your keyboard to open the Run program.
- Type %appdata%\Microsoft\teams inside the box and hit Enter key.
- Delete every folder of the directory.
- Open this link on your browser.
- Click on Download Now.
- Open the file and follow the instructions to reinstall it.
Now, open Microsoft Teams again and see if the error still appears.
FAQ
Question: How do I fix the Microsoft Team error code?
Answer: Turning off VPNs or proxy servers on your pc and clearing MS Teams’ cache files fixes Microsoft Teams’ error code. Also, adding your work account to the Windows account manager and updating the app to the latest version will help run it smoothly.
Question: How do you clear a team cache?
Answer: To clear Microsoft Teams app’s cache files, press Win+R keys>Type %appdata%\Microsoft\teams inside Run dialog box and click Enter> Press Ctrl+A> Press the Del key on your keyboard. Now the app’s cache files are cleared from your device.
Also, check out our separate post on Airpods Not Working with Microsoft Teams
Conclusion
Before wrapping things up, I hope you understood all the complications and issues behind the Microsoft Teams error code caa5004b by reading the above sections.
Now, if you’re feeling confident about taking things in your hand, then approach ahead to apply the solutions yourself.
Also, don’t forget to comment below if you’re facing any troubles applying the solutions or have any queries regarding Microsoft Teams error code caa5004b. Our experts will try to answer any of your queries right away.
