Email not working on iPhone
There could be several reasons why your Outlook email stopped working on your iPhone. Here are a few things you can check:
Check your internet connection: Make sure that your iPhone is connected to the internet. If you are not connected to Wi-Fi, make sure that cellular data is enabled.
Check your account settings: Verify that your account settings are correct. To do this, go to Settings > Passwords & Accounts > select your Outlook account > Account > make sure that your username and password are correct and that the server settings are configured properly.
Check for updates: Make sure that your iPhone's operating system and Outlook app are up to date. Updates often include bug fixes and performance improvements.
Restart your iPhone: Try restarting your iPhone and then open the Outlook app again. This can sometimes resolve issues with apps not working properly.
Remove and re-add the account: If none of the above steps work, try removing and re-adding your Outlook account to your iPhone. To do this, go to Settings > Passwords & Accounts > select your Outlook account > Delete Account. Then, go back to Passwords & Accounts and add your Outlook account again.
If none of these steps work, you should contact Microsoft support or your company's IT department for further assistance.