I understand you're having an issue adding your email account to the Mail app. Let's try and work together to resolve this.
First, I recommend going to the website to login to your Hotmail webmail to make sure the account credentials are active and working correctly. Make sure you're able to login here: Outlook.com - Microsoft free personal email
If your account is working and logging in just fine, follow the steps in the following article to add the account to Mail on your Mac: Use Mail on your Mac - Apple Support
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
cannot install hotmail account in mail
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.