Suspicious Login Issues

How to Stop Repeated Microsoft Account Sign-In Attempts and OneDrive Spam

Rana Garcia Sep 29, 2026 869 views

Question details

The user is experiencing continuous Microsoft Authenticator prompts and receiving unknown shared files in OneDrive, indicating their public email alias is being targeted.

How to Stop Repeated Microsoft Account Sign-In Attempts and OneDrive Spam

Product: Microsoft Account and OneDrive
Device & OS: not provided
Scenario: Securing a Microsoft account against unauthorized login attempts and removing spam files from OneDrive.
Observed behavior: Constant repeated sign-in requests on Microsoft Authenticator and unauthorized, suspicious files appearing in OneDrive shared folders.

Before you start

Ensure you have access to your current Microsoft account security verification methods (such as an alternate email or phone number) before making changes to your account aliases.

Solution 1Recommended

Create a Private Sign-in Alias to Stop Login Attempts

By changing your sign-in preferences to a new, secret alias, attackers will no longer be able to use your public email address to trigger login attempts.

This is the most effective method to stop repeated authentication prompts. It hides your login ID while allowing you to keep your existing email address for normal communications.

Access Microsoft Account Settings

Visit https://account.live.com in your web browser and sign in with your current credentials.

Add a New Email Alias

Navigate to 'Your info', select 'Edit account info', and click on 'Add email' to create a new, private email alias.

Set as Primary Alias

Click 'Make primary' next to the newly created private alias.

Change Sign-in Preferences

Click 'Change sign-in preferences' at the bottom of the page and uncheck your old public alias so it can no longer be used for logging in.

Create a Private Sign-in Alias to Stop Login Attempts

Keep Your Old Alias: Do not delete the old alias if you still need to receive emails sent to it. Never share your new private sign-in alias with anyone.

Solution 2

Remove and Report OneDrive Spam Files

Protect your account by safely removing unwanted shared files and reporting the senders to prevent future spam.

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Frequently Asked Questions

If I create a new Microsoft account, will my OneDrive data migrate automatically?

No, OneDrive data migration is not automatic. You will need to manually download your files from the old account and upload them to the new one, or use the sharing feature to transfer access.

Can I still receive emails on my old email address after changing the sign-in alias?

Yes, as long as you do not delete the old alias. By unchecking it in your sign-in preferences, you only block it from being used to log in, but it remains active for receiving emails.

Why am I receiving frequent Microsoft Authenticator prompts?

Attackers who have discovered your public email address are repeatedly trying to guess your password or trigger a login approval. Changing your primary sign-in alias to a secret one will stop these prompts because they will no longer know your login ID.

Microsoft Office Security Issues