Login to the AWS access portal blocked by local machine PIN authenticator.

It sounds like you're experiencing an issue with the multi-factor authentication (MFA) process when trying to log in to the AWS access portal. The local machine PIN authenticator you're referring to is likely a form of MFA that's been set up for your account.

If the PIN authenticator isn't appearing consistently, there could be a few reasons for this:

1. Browser issues: Try clearing your browser cache and cookies, or use a different browser or an incognito/private browsing window.

2. Time and date settings: Ensure that your laptop's date and time settings are correct and synced. Authentication can be sensitive to time discrepancies.

3. Device recognition: The access portal might not be recognizing your device consistently, which could explain why the PIN authenticator works sometimes but not others.

Since the "Forgot Password" option isn't working properly, you may need to take alternative steps:

1. Contact your AWS administrator: They may be able to reset your password or troubleshoot the MFA issue from their end.

2. Use an alternative MFA method: If you have other MFA options set up (like a mobile app authenticator or SMS), try using those instead.

3. Check for system updates: Ensure your operating system and browser are up to date, as outdated software can sometimes cause authentication issues.

If the problem persists, you may need to contact AWS Support directly. They can help verify your credentials and investigate any potential account-specific issues that might be preventing your access. Remember to be prepared to verify your identity when contacting support.

In the meantime, if you urgently need access to AWS services, check with your administrator if there's a temporary workaround or alternative access method available while this issue is being resolved.
Sources
Resetting your AWS access portal user password - AWS IAM Identity Center
Cant sign in with new AWS sign method | AWS re:Post
Log In Driving me crazy | AWS re:Post