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It appears you're experiencing a common issue with AWS Builder ID where the system is incorrectly redirecting you to the sign-up flow instead of the sign-in process.
Here are some steps you can try to resolve this issue:
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Clear your browser cache and cookies: This often resolves redirect issues by removing any stored data that might be causing the problem.
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Try using a private/incognito browsing window: This can help determine if the issue is related to your browser's stored data.
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Try a different web browser or device: Sometimes the issue might be specific to a particular browser or device configuration.
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Check your device's date and time settings: Ensure your device is correctly synchronized to a reliable time source, as time synchronization issues can sometimes cause authentication problems.
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If you originally signed up with Google authentication, make sure you're selecting the correct sign-in method. If you have an existing Builder ID using the same email address as your Google account, you should sign in using your AWS Builder ID password rather than Google authentication.
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If you continue to experience this issue after trying these steps, you may need to contact AWS Support directly through the Support Feedback form with details about your issue.
This redirect loop is a known issue that can occur with AWS Builder ID authentication, particularly when there's confusion between existing accounts and new sign-ups using the same email address.
Sources
AWS Builder ID Creation | AWS re:Post
Troubleshooting AWS Builder ID issues - AWS Sign-In
signin.aws.amazon.com | AWS re:Post
Hi
Did you signup with gmail account directly, or did you use your Google account?
Please take a look here. https://docs.aws.amazon.com/signin/latest/userguide/troubleshooting-builder-id-issues.html#sign-in-google-builder_id
If you have an existing Builder ID profile with the same email address as your Google account, use your AWS Builder ID password to sign in to your account. If you don't remember your password, see I forgot my password.
Hi,
Thank you for your reply. I’m not completely sure, but I believe I didn’t sign up using my Google account directly. I also tried signing in with my Google account, but it showed the following error message:
Sign in error The email you are using has a Builder ID account associated with it. To continue, return to sign in and enter the password for the account or try a different email.
Additionally, here is the video showing the login issue I encountered. https://drive.google.com/file/d/1NqqZWoq-63bg1FdciaVc6hdCi3bKIi98/view?usp=sharing
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I also tried clearing the browser cache, using other browsers (Chrome, Edge, Safari), and logging in from other devices, but none of them worked. The result was the same as before — I was redirected to the registration page and then the process failed. And I'm sure that my device is correctly synchronized to a reliable time source. I did sign in using your AWS Builder ID password rather than Google authentication. The URL of the login page is https://us-east-1.signin.aws/platform/d-9067642ac7/login?workflowStateHandle=f45c437a-5e92-4760-ad11-5f2a0b37bee7. After I enter my email address and click “Continue,” it redirects to URL https://profile.aws.amazon.com/?workflowID=8cd1040b-4d25-4145-94e0-997484665a0a#/signup/enter-email. At this point, I’m asked to enter my name. When I enter my name and click “Continue” again, the following error appears: Sorry, that email is taken. You can try logging in with this email address, or enter a different email address to continue registering.