How to Fix Microsoft Teams Error caa90019 in Windows 11/10

No need to call IT! Follow these simple solutions to fix the caa90019 error in Microsoft Teams and join your colleagues again.

Getting problems in Microsoft Teams can make it hard to work together and get things done. Windows 11 and 10 users often have trouble with error code caa90019. This mistake usually means there is a problem with the sign-in process, which keeps users from using the Teams app and its features. However, this mistake can be How to Fix Microsoft Teams Error caa90019 in Windows 11/10.

There are many things that can cause error code caa90019, such as problems connecting to the network, damaged cache file, old software, or third-party programmes that don’t work well together. Users can easily fix this error by following certain steps, which will allow them to join Microsoft Teams without any problems.

Why Microsoft Teams Error caa90019 in Windows 11/10

  • Problems with Your Account: Make sure your Microsoft account is current and has the rights you need to use Teams. Look at your plan to see if there are any subscription conditions or limits.
  • Problems with Your Subscription: If you’re using Teams with a business or school subscription, make sure the membership is still valid and hasn’t expired.
  • Outdated Teams App: Always use the most recent version of Teams to get bug fixes and better protection. Use the Microsoft Store to get the update.
  • Corrupted App download: Reinstall Teams because errors can happen if the download isn’t done right. First, remove it, and then get a new copy and install it.
How to Fix Microsoft Teams Error caa90019 in Windows 11/10
  • Faulty System Files: Use the System File Checker (SFC) tool to find and fix any broken system files that could be affecting Teams.
  • Software That Could Interfere: Turn off temporarily any other programmes, like antivirus or VPN software, that could get in the way of Teams.

How to Fix Microsoft Teams Error caa90019 in Windows 11/10

Clear Microsoft Teams’ Credential Manager

  1. To do this, go to the Search bar in Windows.
  2. Open the tool by typing in Credential Manager.
  3. To find the Microsoft Teams passwords, click Windows passwords and then look for them.
  4. Pick these out and click the “Remove” button.
  5. The problem code should be gone by now. Open Microsoft Teams again to make sure.

Uninstall and Reinstall Microsoft Teams App

One thing you can do to be extra sure is to remove Microsoft Teams from your computer first. This will get rid of all of its data. So that you can start over, install the app again. This time, error codes like caa30190 and caa9001 should not show up.

Delete Teams app cache

  1. Close out of Microsoft Teams.
  2. To open the Run window, press Win + R on your computer.
  3. When you’re done, press Enter or OK to finish.
  4. Visit the following place:
  5. C:\Users\USERNAME\AppData\Local\Windows 10
  6. Get rid of all the files and folders in the Teams area.

Install all Windows updates

  1. In the Windows search box, type “Updates” and press “Enter.”
  2. Here, click on Check for new content.
  3. Wait until Windows gets all the files and installs them.
  4. If there are updates that you don’t have to run, do so anyway.
  5. Turn your device back on.


Why is Microsoft Teams not working?

If you are having trouble connecting to Microsoft Teams, it could be because of your firewall, proxy, or VPN (if you use one). Before you do anything else, make sure the issue isn’t with your internet link. Next, check to see if the app is being blocked by your firewall. If it’s not, open the VPN app on your Mac and turn it off.

How do I repair a team in Windows 11?

To find other troubleshooters, go to System > Troubleshoot > Other. Click Run when you see Windows Store apps further down the page. You can also go to Windows settings and click on Apps, then Apps & features. After you find Microsoft Teams, go to “Advanced” and fix the app.

Why does Windows 11 have two versions of Teams?

On Windows 11, Teams comes in two different styles: The first one is already setup and can be used for free with a Microsoft account. The second one is for a business setting where an administrator will be in charge of the Teams app and the system.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


Please enter your comment!
Please enter your name here

Related Articles

Best Telemedicine Software: for your healthcare practice

Telemedicine software has transformed my healthcare visits. It's fantastic for patients and doctors since they can obtain aid quickly. I...
Read more
I love microlearning Platforms in today's fast-paced world. Short, focused teachings that engage me are key. Microlearning platforms are great...
Think of a notebook on your computer or tablet that can be changed to fit whatever you want to write...
As of late, Homeschool Apps has gained a lot of popularity, which means that an increasing number of...
From what I've seen, HelpDesk software is essential for modern businesses to run easily. It's especially useful for improving customer...
For all of our important pictures, stories, and drawings, Google Drive is like a big toy box. But sometimes the...