Do you use Outlook to check mail and your email is not working properly today? Microsoft had an update on 5/11/2021 that has caused a range of issues with the email client Outlook.
Microsoft has identified the root cause and will be pushing out a fix. After installing the fix you will need to close and reopen Outlook for the fix to take effect.
Some issues are - emails not showing, autocomplete not working and basic typing of email is impaired. If you are having an issue with Outlook you can use your webmail in the interim.