Usually, there are internal system errors that cause this situation. Other times, it’s probably just a temporary error or a browser-Internet issue. When you are try to log in and aren’t able to open the page or even after logging in hotmail is not working then check if you are using the right browser that supports is. Also check your internet connection for any network issue as it may as well be hindering your Hotmail service. You can also visit the website of Hotmail tech support in order to read about the commonly occurring issues that create the issue of Hotmail not working.