Stop Unwanted Emails from Signing In to Your Microsoft Account
You can stop unwanted emails from signing into your Microsoft account by removing them as aliases.
An email alias is just another email address, like outlook_B6F9GH@outlook.com, that you can use to sign into your Microsoft account. These aliases share your contacts, files, and subscriptions under a single password.
Having multiple ways to sign in can be handy, but sometimes you’ll want to stop specific, forgotten, or unknown email addresses from getting into your account. This tutorial shows you how to manage and remove these aliases to enhance your account security.
Remove unwanted aliases from your Microsoft account. Sign in to account.microsoft.com, navigate to “Your info,” then “Sign-in preferences.” Uncheck the boxes next to any aliases you do not want to use for logging in.
What Are Microsoft Account Aliases?
Microsoft account aliases are like extra email addresses or phone numbers that all lead to your main Microsoft account, acting as different ways to sign in.
How to Stop Unwanted Emails from Signing In
Ready to take control? Here’s how to manage which aliases can sign in to your Microsoft account. You do this on Microsoft’s website, so you’ll need a web browser.
Step 1Sign In to Your Microsoft Account
Signing into your Microsoft account is the first step to managing its settings. You’ll need to go to account.microsoft.com and enter your email or phone number and password to get started.
- Open your web browser (like Edge, Chrome, or Firefox).
- Go to account.microsoft.com.
- Type in your email address or phone number for your Microsoft account and click “Next.”
- Enter your password and click “Sign in.”
Tip: If you have two-factor authentication (2FA) or multi-factor authentication (MFA) turned on, you’ll need to prove it’s really you. This might be through an app, a text message, or another way you set up. This is an extra security step, so don’t skip it!
Warning: Always make sure you are on the real Microsoft website (account.microsoft.com) before typing your login details. Watch out for fake websites trying to trick you.
Step 2Go to Sign-In Preferences
Once you’re signed in, find the ‘Your info’ section of your Microsoft account. From there, click on ‘Sign-in preferences’ to access the settings that control how you can log in.
- After logging in, look for a menu. It’s often on the left side or at the top.
- Click on “Your info.” This is where your account details are.
- In the “Your info” section, find and click on “Sign-in preferences.”


Tip: Microsoft’s website can change its look. If you don’t see “Your info” immediately, check for sections named “Account security,” “Personal info,” or “Manage how you sign in.”
Step 3Choose Which Aliases Can Sign In
The ‘Sign-in preferences’ page shows all your Microsoft account aliases. You can choose which of these aliases are allowed to sign in by simply checking or unchecking the boxes next to them.
- On the “Sign-in preferences” page, you’ll see a list of your aliases.
- Next to each alias, there will probably be a box to check or a switch to turn.
- Uncheck the box or turn off the switch for any alias you do not want to use for logging in.
- Keep the box checked or the switch on for the aliases you do want to use for signing in.

Good to Know: It’s smart to keep your main email address or the alias you use most often turned on for sign-in. You might also want to keep another trusted alias on as a backup, just in case your main one has a problem.
Important Note: Turning off sign-in for an alias does not remove it from your Microsoft account. The alias will still be there, and you can still get emails sent to it (if it’s an email address). You just won’t be able to use that specific alias to log into your Microsoft account. You can always turn it back on later if you want.
Step 4Save Your Changes
After deciding which Microsoft account aliases you want to use for signing in, it’s important to click the ‘Save’ button. This action at the bottom of the page makes your chosen settings active.
- Look for a button that says “Save” or “Apply.” It’s usually at the bottom of the “Sign-in preferences” page.
- Click the “Save” button.
Once you click “Save,” your settings will be updated. The aliases you turned off won’t work to sign in to your Microsoft account anymore. If someone tries to use one of those blocked aliases to log in, they will get an error message saying the username is turned off or not recognized for sign-in.
Warning: Look carefully at which aliases you are turning off. If you accidentally turn off your only sign-in alias, it might be hard to get back into your account without a more complicated recovery process. Always make sure you have at least one good alias left turned on for sign-in.
What Happens After You Block an Alias?
Blocking a Microsoft account alias means that email address or phone number can no longer be used to sign in. This action helps improve your account’s security by preventing unwanted login attempts.
For example: If you added a temporary email address as an alias and now want to make sure no one can use it to try and access your account, blocking its sign-in is the best way. Emails sent to that address will still come to your Microsoft account inbox, but the address itself can’t be used to get into your account.
Trouble and More Help
If you have trouble signing in or changing your Microsoft account aliases, Microsoft offers help. You can use their Sign-in Helper Tool or contact Microsoft Support for assistance with any issues.
- Sign-in Helper Tool: For common sign-in problems, Microsoft has a tool that can help figure out and fix many issues. You can usually find a link to this tool on their sign-in pages if you’re having trouble.
- Contact Microsoft Support: If the tools don’t help, you can contact Microsoft’s official support. They have special ways to get technical help. You can usually find a “Contact Support” link on most Microsoft help pages.
A Very Important Warning from Microsoft Support: Microsoft support workers are usually not allowed to send password reset links or directly access and change your account details. This is a security measure to protect your information. You will likely need to use their automatic recovery tools or prove you own the account if you get locked out.
Conclusion: Take Control of Your Microsoft Account Security
Controlling which Microsoft account aliases can sign you in is a key way to boost your account’s security, ensuring only you can access your private information.
Reference: Block an email address from signing in – Microsoft Support
Why do I keep getting emails about my Microsoft account?
You might receive emails about your Microsoft account due to security alerts, password reset requests, or notifications about account activity. Microsoft sends these to keep you informed and protect your account from unauthorized access. Always check the sender's address to ensure it's a legitimate Microsoft communication.
How do I block my Microsoft login?
You can't directly 'block' your Microsoft login entirely, but you can manage which email addresses or phone numbers (aliases) can be used to sign in. By removing unwanted aliases from your account settings, you prevent them from being used for login, thereby enhancing your account's security.
How to block emails from Microsoft?
To stop receiving certain emails from Microsoft, you can manage your communication preferences in your Microsoft account settings. Look for options related to marketing emails or newsletters and unsubscribe from those you no longer wish to receive. This won't affect important security notifications.
How do I stop my Microsoft account from automatically logging in?
To prevent automatic login to your Microsoft account, clear your browser's cookies and cache. You can also ensure that the 'Keep me signed in' option is unchecked when you log in. For added security, consider signing out completely after each session on shared or public computers.
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About the Author
Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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