Can't send new email

When I try to send a new email it gives me an error. I have Hotmail. The last error happened at 9:18 this morning.

What is the error message? Did you go over the sending limits?

Try changing your password and turning on 2 step authentication (login verification) in Hotmail | Email Questions

If it's something else, and it's simply not working, please see this troubleshooting guide:

How to troubleshoot hotmail problems including blank pages and login redirects | Email Questions