What is Modern Authentication?
Microsoft Teams uses modern authentication which is a secure and better way of signing into the app. It is also known as Single Sign-On or SSO. It basically enables users to log in to Microsoft Teams account without reentering email and password on every new session. However, signing in with modern authentication depends on different factors and may vary from organization to organization. For example, it depends on whether or not your organization has enabled single-factor authorization or multi-factor authorization. In the case of multi-factor authorization, users need to enter a unique code, PIN, or thumbprint to verify the credentials provided on their registered phone. Once you are logged in to your account, Microsoft Teams won’t require your credentials to sign you in every time your launch the app. You will be automatically logged in.
Why can’t I sign into my Microsoft Teams account?
There can be different reasons why you might be unable to sign in to your account on Teams. While modern authentication is great, users might run into sign-in errors from time to time. Many times, the problem lies with your domain or organization’s Office 365 account. In that case, contacting your IT admin or sysadmin might get your problem fixed.
What does the status code at the bottom of my error message on Microsoft Teams mean?
The status code that you get at the bottom of an error message on Teams helps to identify and diagnose the sign in error you just encountered. Make a note of it and contact your IT admin and tell them about the status code; they will help you troubleshoot a specific error code accordingly. Now, let us check out the common and know error codes that users encounter when trying to sign in to their account on Microsft Teams.
What are the Sign-in error codes on Microsoft Teams?
Here are the known sign-in error codes that a lot of users have encountered while logging into their Microsoft Teams account. Let us see how to Fix Microsoft Teams Sign-in error codes 0xCAA20003, 0xCAA82EE2, 0xCAA82EE7, 0xCAA20004, 0xCAA90018.
1] Teams Error Code 0xCAA20003
This is a sign-in error code that prompts the following message when triggered: As mentioned by the officials of Microsoft Teams, this is basically an authorization problem. To fix it up, ensure that the date and time on your device are set correctly as it can affect connectivity with secure sites.
2] Teams Error Code 0xCAA82EE2
Another login error code on Microsoft Teams is 0xCAA82EE2. This error code shows a similar message like “We can’t connect you.” The primary reason to encounter this error code is that the request is timed out. You can try fixing it up by making sure that you are connected to a stable internet connection. Also, ensure that our firewall or antivirus is not preventing you from accessing your Microsoft Teams account. If so, disable your firewall or antivirus program and see if the issue is resolved.
3] Teams Error Code 0xCAA82EE7
You might also encounter an error code 0xCAA82EE7 while signing into Microsoft Teams. This error code basically indicates that the server name or address could not be resolved. This can also occur due to internet connectivity issues or your firewall configurations. So, ensure that you are connected on an active and stable internet connection. If you are sure that is not the reason for the error, try turning off your firewall or antivirus protection and check if the issue is resolved.
4] Teams Error Code 0xCAA20004
One more sign-in error code on Microsoft Teams is 0xCAA20004. This error suggests that a resource owner or authorization server needs to approve your requests. It is triggered with the following error message: If you encounter this error code, get straight to your IT administrator and make sure that Azure Active Directory (AAD) configuration policies are followed by your organization. Read: How to fix Microsoft Teams Error Code CAA301F7
5] Teams Error Code 0xCAA90018
The error code 0xCAA90018 on Teams indicates that you have entered incorrect login credentials. So, make sure you are signing in with the right email and password. If the error still occurs even after entering the correct credentials, contact your IT admin.
6] None Error Code in Microsoft Teams
If you are unable to sign in to Teams but didn’t get an error code, you might require to re-enter your PIN using a smart card. So, re-insert your card and enter the pin. If that doesn’t help, you might be dealing with a corrupted smart card certificate. In that case, try contacting your IT administrator. Read: How to Fix Microsoft Teams Error CAA2000B
Fix Microsoft Teams Sign in Errors and Problems
Most of these error codes have common fixes that you can try to resolve sing in errors and problems in Microsoft Teams:
1] Check your Internet Connection
Some of these error codes like 0xCAA82EE2 and 0xCAA82EE7 are results of internet problems. So, to counter them, you need to ensure that there are no network issues on your PC and you are connected to stable internet. If there are connectivity issues, try troubleshooting the internet problems on your system. Tip: How to fix WiFi problems in Windows 11/10
2] Check if there are some service issues at the end of Microsoft Teams
If there are some service issues from the Microsoft Teams side that is preventing you to log in to your account, you will need to wait. They will resolve the problems from their end in some time. Meanwhile, you can keep checking the service status of Microsoft Teams and try signing into your account in between.
3] Try accessing your Teams account on a web client
You can also try accessing your account on a different platform. Like, if you are signing into Teams’ desktop app, switch to the web client and see if you are able to log in without any error.
4] Make sure the firewall is not blocking access
Try contacting your IT admin and check there a firewall, antivirus, or any other app is blocking access to Microsoft Teams. If yes, disabling the firewall and other antivirus programs might help you resolve the error. This fix is effective in case of error codes like 0xCAA82EE7 and 0xCAA82EE2. See: Microsoft Teams Camera greyed out or not working
5] Some other solutions to try
There are some other fixes that might help you get rid of a sign in error code on Microsoft Teams:
You need to make sure you have entered the correct login credentials for your account, in the case of the 0xCAA90018 error code.See if the date and time are rightly set on your PC if you encounter a 0xCAA20003 error code. If not, the HTTPS sites may block a suspicious connection from your PC.You can also try disabling your VPN client or VPN browser extensions to check if you are able to sign in without any issues.
See: How to fix Microsoft Teams error caa70007
6] Contact your IT admin in case of an unknown status code
If you encounter any other error code than the ones we mentioned here, you can try contacting your IT administrator or system administrator. They are able to fix most of the sign-in problems. Read: Video sharing is disabled by the administrator in Microsoft Teams
Why is my Microsoft account locked?
Your Microsoft account might be locked in case of a security issue. If you have entered the wrong password for your email multiple times, your account might get locked. Or, there is some activity on your account that has violated Microsoft Terms of Us that might have gotten your account banned. However, the recovery process is easy which you can perform by following the on-screen instructions.
Why my Microsoft Teams is not working?
If Microsoft Teams is not working or Microsoft Teams keeps crashing/ freezing, there can several causes for that. Like, if Microsoft services are down for maintenance or it can be caused due to Microsoft Teams cache. You can try checking the service status of Microsoft Teams, clearing up the Teams cache, clearing Windows credentials, etc. If nothing works, try reinstalling the Teams app on your PC and check if the issue is resolved or not. That’s it! Related errors:
Microsoft Teams Calendar missing or not showingThe file is locked error on Microsoft Teams.
