Deleting Outlook cached address on Office 365

Hey Nick Inglis,

Unfortunately this is going to be a bit manual either way.

1. The "correct" way to do this is on each users computer/account, just for the old email address. In essence you would want them to start typing the new teachers name, lets say "New Teacher." When they start typing they would get the option to auto-complete using the old address that is cached. They would want to mouse over this, and click, then hit the delete key. (it is in essence the same steps as if you were clearing this out of an outlook client.) Once they have highlighted the old autocomplete, and deleted, that cached address/entry will be gone, and the next time they go to fill in the to field for New Teacher, it will work the client to look into the GAL, find the new address, and should work.

This would have to be done for each user. I would probably put together a quick video showing yourself doing it (powerpoint has a great insert screenshare functionality to do this), or just type up instructions. Something like 1. Log into OWA 2. Start a new email 3.Start typing in new teachers name until you see the auto complete option 4. Select the address to autocomplete 5. While still highlighted hit the delete key 

You could also technically get around this by clearing the entire cache too, which I would not recommend.

Adam