According to the reports, continuously pressing the login button exacerbates the matter and they are hit with a warning that the number of retry attempts exceeds expectations. If this sounds familiar, you’ll want to keep reading the article for a resolution.
Why am I getting the error code CAA50021?
This error can be caused by various reasons, including the following:
Office is outdated – The most common cause of this error is that you’re using an older version of Office. Firewall settings – Sometimes, your firewall or antivirus can block certain programs or services if it flags them as a threat to your PC. The device is not connected to Azure – You may be getting this error code because your device is not connected to Azure. If this is the case, look at the status of your device in Azure. Multi-factor authentication – Although multi-factor authentication software adds an extra layer of protection, sometimes verification may fail and lock you out of your account. Expired registration – Devices registered to Azure have a timed license, so if you’re having trouble signing in, your account may have expired. Admin has blocked access – If you’re using a public network, this error may occur if the network administrator has blocked access to Microsoft Teams or other applications.
How can I fix the error code CAA50021?
Check the following before moving on to the advanced troubleshooting:
Double-check that you’re using a Microsoft account or a work or school account that is an Office 365 account. Ensure you’re not on a public network or switch to mobile data and see if the error persists. Also, check out how to protect yourself when using public Wi-Fi. Switch from the web version to the app.
1. Update Office
To make sure that you’re getting all of the features available with your subscription, make sure that you’re using the most up-to-date version of Office 365. You may find that Office keeps asking you to sign in so that you can update to the latest features.
2. Disable antivirus temporarily
If you’re using a third-party antivirus program, you should also disable it and try signing back in and check if the error CAA50021 in MS Teams is still there. SPONSORED
3. Link your device to a work/school account
4. Re-register your device with Azure
In case all these fail, your admin IT support should be your next stop. Sometimes, there’s nothing wrong on your end, and it has everything to do with your IT department. This is especially true for those facing the CAA50021 error on Office 365 products such as OneDrive after multi-factor authentication was enabled. The IT admins will be able to re-register your device or address any other account problems you may be facing. You may also come across an issue where Microsoft Teams status is stuck on updating so be sure to check out our helpful guide on how to proceed. If you’d like to try out other collaboration software, especially for small-sized businesses, we have a couple that we can recommend. Let us know if you have been able to solve this error in the comment section below.
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