Microsoft will roll out a fix for a known issue causing Outlook for Microsoft 365 to crash on systems where users attempted using the Search bar or Search Suggestions features. Users have reported encountering this bug on various online platforms, including Microsoft’s community website and Reddit. A fix has already been developed for this issue, with a fix being planned to roll out worldwide to all impacted users on Tuesday, July 13. Microsoft also addressed an Outlook bug that blocked users from forwarding or replying to emails bundling embedded hyperlinks.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-fixes-outlook-crash-issues-when-using-search-bar/