Outlook.com (formerly Hotmail)

Unfortunately, Microsoft has removed the ability to use third-party email account s in conjunction with Outlook.com.

Please see the Microsoft article linked below for more information. Note that only Outlook.com is affected. Mail client software such as Outlook for desktop or mobile can continue to be used.

https://support.microsoft.com/en-us/office/connected-email-accounts-like-gmail-and-yahoo-not-working-in-outlook-com-a99a1f0b-700d-4b3b-8f9a-28d463ff07f2