How do I fix an 'Outlook not connected to server' error on iPhone?

Fithoney wrote:

This just happened and I signed in using my outlook mail but when I have my mailbox it keeps saying outlook not connected to server please sign in?

I went into outlook and signed in and it worked but still get server failed on my email

[Re-Titled by Moderator]

You can report the issue to Microsoft support or look at their help site, since it is an issue with their server.