
This new known issue is very similar to another one triggered on systems upgraded to Windows 11 and causing similar search issues. The company said it's currently investigating this issue and will provide more information and an update as soon as possible.

"After you install update KB5008212, recent emails may not appear in search results," Microsoft explains in a recently published Office support document.

Microsoft has acknowledged an issue triggered by a Windows 10, version 21H2 security update released during the December 2021 Patch Tuesday that leads to search issues in Outlook for Microsoft 365.
