Same issues after upgrading to macOS Monterey 12.1. I installed Outlook for Mac beta Version 16.57 (21122200), but the issue is still there.
Rebuilding Spotlight database does not help, Outlook still shows "no results" when searching.
dsumin
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Last seen
From
Tallinn
Post
Replies
Boosts
Views
Activity
Microsoft confirmed this issue: https://support.microsoft.com/en-us/office/search-in-outlook-for-mac-returns-no-results-after-installing-macos-monterey-12-1-075c5f09-35db-4205-aba3-eea2f168c71b
I can confirm that Outlook Version 16.58 (22010406) resolves this issue.