i cannot add new email to outlook365 win 11

Try this in classic Outlook on Windows 11:

1. Open Outlook.
2. Select File > Add Account.
3. Enter the email address, then continue the sign-in flow.
4. If this is an additional account, repeat the same steps from File > Add Account.

If automatic setup keeps failing:

1. In classic Outlook, go to File > Add Account.
2. Enter the email address.
3. Select Advanced options > Let me set up my account manually.
4. Choose POP or IMAP.

Important:

• Manual setup in classic Outlook is not available for Microsoft 365 or Exchange accounts unless POP or IMAP is enabled for that account.
• If the account is from Gmail, Yahoo, or iCloud, two-factor authentication may require an app password instead of the normal password.

If the email being added is a Microsoft account sign-in alias rather than a separate mailbox, adding it to the Microsoft account does not create a separate Outlook mailbox. Adding an alias only adds another username for the same Microsoft account.

If the goal is to add another sign-in email to the Microsoft account itself:

1. Sign in to the Microsoft account how you sign in page.
2. Select Add email.
3. Follow the prompts to add the new email address as an alias.

If the goal is to add a mail account in the Outlook mobile app instead, use:

1. Tap the avatar in the top left.
2. Tap the gear icon.
3. Under Mail Accounts, tap Add Mail Account > Add Email Account.

References:

• Add an Outlook.com or Microsoft 365 account | Microsoft Support
• Troubleshoot Outlook email setup | Microsoft Support
• How to add an email address to your Microsoft account | Microsoft Support
• How do I add an account for O365, Outlook.com, or Exchange? | Microsoft Support