Microsoft Account Alias

Hi there YojanWayne,

Thanks for reaching out here in Xbox Forums. I understand there is a question with Microsoft Account Alias.

• If you remove an alias that's an email address from a Microsoft domain (like @hotmail.com, @live.com, @outlook.com, or @msn.com), you're permanently deleting the alias and it can't be associated with any Microsoft account again.
• Make sure you save any info that you want from this alias before you remove it. All your email and contacts for this alias will be immediately deleted from the server and can't be recovered, and you won't be able to access Microsoft
  services like Xbox, Skype, and OneDrive if they use that alias.
• If you're removing a primary alias, you'll need to choose another primary alias before it can be removed. If you’re using the primary alias to sign in to Microsoft services, you may not be able to sign in to these services after you delete
  the alias.
• If you remove an email address from a non-Microsoft domain (like @gmail.com), then it usually becomes immediately available to be added as an alias on another Microsoft account.

For more detailed information about how to add an alias, including why and how to set your primary alias, see the
Manage aliases on your Microsoft account article.

Hope this helps.

Hello Big,

I'm Diane, an Office Apps & Services MVP specializing in Outlook, and I’m happy to help you today.

Yes, only Microsoft can change the default to something else when you get that message.

It looks like changing the default address for email doesn't apply to the default email address in Outlook.com's Settings (gear icon) > View all Outlook settings > Sync Email and choose the default address, doesn't apply to meetings, so you will need to contact Microsoft.

Contact Outlook support though in-app help -

Log into Outlook.com on the web using a PC or Mac.

Click the ? icon to open the Help menu.

Type a question. Scroll to the end of the research results and click Yes for Still need help?.

How to get support for Outlook.com

https://support.office.com/article/f5482a98-616...

My name is Fernando I'm an independent consultant, I'm happy to help.

Go to Manage how you sign in to Microsoft. Sign in to your Microsoft account if prompted.

Select Remove next to the alias you no longer need. If you are removing a primary alias, you will need to choose another primary alias before it can be removed.

If you remove an email address from a non-Microsoft domain (such as @gmail.com), it is usually immediately available to add as an alias in another Microsoft account. What is an alias?
An alias is an additional email address associated with your Outlook.com account. An alias uses the same inbox, contact list, and account settings as your primary email address. You can log into your Outlook.com account with any alias, they all use the same password.

Hope I helped and see you soon

You're thinking of alias as a way to link your different Microsoft accounts together...it's not that. Creating a new alias means you're signing up for a new (not taken) email address, but the email to/from this new address will use existing inbox.

If you want to add your 2nd Microsoft account's email address as alias to this one, first you'll have to remove that email address from that account (i.e. sign up for an alias on that account, make the new alias primary, delete the email address you want
to move, wait for 30 days for that email address to be available to the world, then add it to your current Microsoft account as new alias).

I'm not entirely sure if this is possible to do. You might be able to add a new alias (Alias B) to your account and make that new alias the primary account (Alias A). Then create another email address(Alias C) and add your current email (Alias A) as a primary
alias to that account

But since you can't transfer data from one account to another I'm guessing it's not something that's possible

You can find more information regarding what I'm talking about here:
https://beta.support.xbox.com/help/Account-Profile/manage-account/change-email-sign-in-for-microsoft-account

[i][b]Warning[/b] When removing an email alias that’s a Microsoft domain (such as @Outlook.com, @Live.com, or @Hotmail.com), that email is completely deleted from our systems and can no
 longer be used to send or receive emails. It won’t be available for use again as an alias on another account. Microsoft does not recycle email addresses, so it may not be reclaimed at a future time.
[/i]