Hello Elle,
Thank you for posting your query in this forum.
As per your query you are facing issues accessing your Outlook account without the authenticator app. However, please note that in this scenario account recovery is the best option. Here's what you can do:
[Note: If the 2-step verification option is turned on then it will not allow you to fill the account recovery form.]
- Go to the Microsoft account recovery page: https://account.live.com/acsr
- Once you enter the page, you will need to fill in the details that it will ask for.
- Once you fill out the form, it will ask you for a verification code that you will receive at the alternate email address you are providing there. You have to fill that out.
- Next, follow the instructions and provide as much accurate information about your account as possible. The accuracy must be 80% to recover your account.
- Microsoft will review your information and contact you via the alternate email or phone number associated with your account.
Keep in mind that the account recovery process may take some time, but it's the best way to regain access to your account and important emails.
You can also follow the link provided below for further assistance.
Help with the Microsoft account recovery form - Microsoft Support
Once everything is resolved, feel free to mark this resolution as answer and helpful. If not, please let me know if there is anything else I can help you with. Sincerely,Paro_7276 || Microsoft Community Support Specialist