Telecom providers have come a long way in terms of both the services they offer and the areas they cover. However, as good as their services might be, they can still run into random bugs and glitches from time to time.
In this article, we’re talking about the care code 201 lu100 that might come up for AT&T users from time to time.
What causes this error?
There’s no specific cause behind this error message as it usually occurs due to a glitch on AT&T’s end, especially as you might be able to access your email without a problem with other clients.
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How to fix this?
Here are three fixes you can try out.
Activate your AT&T account
One possible reason that you’re seeing the error is that you haven’t activated your AT&T account yet. To do so, head over to the AT&T sign-in page link that you received with your account credentials, log in and change the password to go with your new ID. This should resolve the error.
Reset your AT&T password
There’s a good chance that resetting your password can get you past the error. Here’s how.
Step 1: Head over to the AT&T login page and click the Forgot password? link.

Step 2: Enter your user ID and last name to proceed. Follow the instructions to reset your password to a different one.

Once you’re done, keep in mind that it could take up to 72 hours for the changes to reflect and for your password to fully update. Try logging in after that and you shouldn’t see the error.
Contact AT&T support
Last but not least, you can also reach out to AT&T support to get them to fix the error for you. If there’s a glitch from AT&T’s end, there’s not much you can do as an end user and the support channels might be able to resolve your error.
Also read: How to activate AT&T phone? Guide for SIM and eSIM activation online