This explains how to re-authenticate iOS mail, specifically with [[Microsoft Exchange Online]]. 1. Open settings and scroll down to "**Apps**".![[IMG_3102.png]] 2. Select "**Mail**"![[IMG_8DDA19741ADE-1.jpeg]] 3. Select "**Mail Accounts**"![[IMG_8DDA19741ADE-2.jpeg]] 4. Select the account having issues![[IMG_8DDA19741ADE-3.jpeg]] 5. Select "**Re-enter password**"![[IMG_8DDA19741ADE-4.jpeg]]