The human brain shows more activity when it sees numbers. So it’s normal for the brain to go berserk when it sees 0xcaa80000 along with the word Error written in front of it. As mine did. 
Turns out I was panicking for no reason.
This error usually occurs when there’s a problem connecting the Teams app to the Microsoft server and is pretty easy to resolve.
In this article, I’ve described how to repair Microsoft Teams Error 0xcaa80000 and also explained what this error is so you don’t face this problem ever again.
What is Microsoft Teams Error 0xcaa80000?
The error 0xcaa80000 was typically associated with outlook, but now it’s here on Teams.
When you get this error, you cannot log in to your Teams account. Because this error comes when the Microsoft server is unable to connect to the Teams app.
More than 270 million people use Microsoft Teams. 
So it is natural that Microsoft will have some problems regarding servers, even though it is a big company with hundreds of billions of dollars in revenue.
As it’s a server issue, you might think the fix is out of our hands. That’s not entirely true. This problem can occur due to your internet connection.
In the next section, I’ve listed all the possible fixes that can solve the Microsoft Teams Error 0xcaa80000.
Follow our guide on Microsoft Teams Lock Files.
How to Fix Microsoft Teams Error 0xcaa80000?
You might think you are getting this error because of Microfofts’ server issues. But this server issue can happen due to your internet connection problems or changing your device date and time.
So you see, there are things we have to check and multiple processes to try to fix this error code.
Here’s how to solve the error 0xcaa80000 on Microsoft Teams:
1. Tweak Your Internet
Enable Transport Layer Security (TLS) from your internet settings. It provides communications security for computer networks.
Here are the steps to enable TLS on Windows:
- Click the search icon from the taskbar.
- Search for Internet Options and run it.
- Go to the Advanced tab.
- Check Use TLS 1.1 and Use TLS 1.2.
- Apply the changed settings.
Check out our latest fix for Microsoft Teams Error 80090030.
2. Check Time & Date
If your device’s time doesn’t match your time zone, Microsoft might block you from accessing your Teams account for security reasons.
An easy solution is to just set the date and time automatically according to your time zone and never think about it again.
Here’s how to set time and time zone automatically:
- Click the Windows icon and go to Settings.
- Select Time & Language.
- Go to Date & time.
- Turn on Set time automatically and Set time zone automatically.
Also, check out our separate post on how to fix Microsoft Teams you can’t send messages error.
3. Clear Teams Cache Data
Sometimes cache data can contain corrupted files, which may result in the problem you are facing. Clear the cache file and check whether the problem is fixed or not.
Here’s the process to clear the Teams cache files:
- Close Microsoft Teams and make sure it’s not running in the background.
- Right-click on the Windows icon and select Run.
- Type in %appdata%/Microsoft/Teams to open the Teams cache folder.
- Open the following folders and delete the files inside them:
- blob_storage
- Cache
- databases
- GPUcache
- IndexedDB
- Local Storage
- tmp
After deleting the cache, restart your device.
Quickly check out our epic guide on Microsoft Teams set out of office alerts.
4. Disable Background Apps
Some apps could be running in the background and taking all the internet resources. As a result, Teams is not getting the sufficient resources to operate correctly and showing the error.
Here’s how to disable background apps:
- Press Ctrl + Shift + Esc to open Task Manager.
- Select the app that you are not using but running in the background.
- Click End task.
5. Update Teams
You might get this error code if you use an outdated Teams version. It’s always a good idea to frequently check for updates and update the app.
Here are the steps to check for Teams update:
- Launch Microsoft Teams.
- Click the 3 horizontal dots beside your profile.
- Select Check for updates.
After these steps, if an update is available, it will be downloaded and installed automatically.
6. Use Different Version
The error 0xcaa80000 usually occurs in desktop apps. You can use Teams on iOS and Android if the desktop version gives you trouble. You can also use Teams on the web browser using your desktop.
This is not a solution; it’s more of a workaround.
7. Disable Antivirus
In case you use a third-party antivirus, it might interfere with the internet and thus stop Teams from working. Temporarily disable the antivirus if you use one and check whether the problem is fixed or not.
FAQs
How do I fix Microsoft team error?
To fix the Microsoft Teams error, delete Teams cache, update Teams, reinstall the app, and run it as administrator.
What does Teams error code caa70004 mean?
Teams error code caa70004 means the Windows credentials you signed in with don’t match the Microsoft 365 credentials. Try signing in with the correct email address and password.
How do I clear MS Teams cache?
To clear MS Teams cache, open the Windows Run program, type in %appdata%/Microsoft, and press OK. Select the Teams folder and delete it.
Final Thoughts
Microsoft Teams is one of the best, if not the best, apps for organizing our work and communicating with our coworkers. But it’s not perfect, and from time to time, we get errors.
However, after today, you won’t have to see the error 0xcaa80000 again as here; I’ve described every single guaranteed fix that will solve this issue.
Let me know if you face any other problems with Teams or other apps.
See you in the comment section.
