Thanks for reaching out to Microsoft Q&A Forum. I understand how stressful it can be to lose access to a key security tool like Microsoft Authenticator—especially when it impacts your professional Facebook account. Here are some concise steps that might help:
Use Your Recovery Codes:
Sign in to Facebook with your username and password.
On the 2FA prompt, click “Need another way to authenticate?”
Choose “Enter recovery code” and input one of your saved recovery codes.
Log In from a Trusted Device:
If you're still logged in on another device, open Facebook there.
Go to Settings > Security and Login > Two-Factor Authentication.
You can then either disable 2FA temporarily or add another method (like SMS or a secondary authenticator) on your new phone.
Contact Facebook Support:
If you’re still locked out, visit the Facebook recovery page, enter your email or phone number, and select “Need another way to authenticate?” or “I can’t access my authenticator.”
Follow the prompts and provide any information (like backup codes, previous login details, or a photo ID) that may help speed up the process.
Please note: Microsoft cannot provide direct support for Facebook account issues since Facebook is a third-party service. If needed, contacting Facebook Support directly is the best course of action.
I hope these steps help you regain access quickly. Let me know if you need any further clarification.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.