Issue
The Outlook mobile client may be experiencing delays in receiving email or not receiving email at all.
Environment
This article applies to the Outlook Mobile Application on Android and iOS.
Resolution
Step 1: Click your profile icon in the top left of Outlook.
Step 2: Click the Gear Cog at the bottom left of the settings menu.
Step 3: Select your email under “Mail accounts”.
Step 4: Scroll to the bottom of the Account info page and select “Delete Account”.
Step 5: It will prompt you to log-in again. Select “Add Account” and input your email address and password to log back into your account. You may need to verify your identity with Microsoft Authenticator..
Cause
This may be due an issue with cached credentials.