App specific passwords for Outlook iOS

I discovered the hard way that when I create an App Specific password for Microsoft Outlook on iOS is have to use the same password on every device accessing the same iCloud account. If you don't do this the first device will logout when the second one is logged in, and then you have to revoke the password for both devices and start again.

So when you've created the supposedly one use password don't dismiss the password from your screen until you've entered it on all devices.

Also - don't try to paste the password on your iOS device - it doesn't work. Type it in character by character from your Mac screen.