1. Outlook for Mac. In Microsoft Outlook 2016 for Mac, you receive a 'No Results' message when you try to search for an email message or apply a filter to a folder, and task items are not displayed in the Tasks folder. Additionally, when you search for mail items by using the Mac OS native Spotlight Search, your search is unsuccessful.
2. The emails that are not found are seemingly at random. I see that my question has been put on hold as it does not have 'enough detail', and I appreciate the brevity, but there really is little else to say. There is no apparent pattern to which emails are not found, and I certainly know how to use Outlook. – CaptainProg Mar 20 '19 at 10:16.

Mar 04, 2016 I have a user who is having issues with his new Outlook 2016. When we added his profile to Outlook it successfully sync all folders. If he tries to search for specific email he gets a ' No Results' message. I already try adding a new identity. Making sure his identity has no special characters. I also tried following this KB, but is not working.

Outlook for Windows

If your search function isn't finding any of your messages or only recent messages in the last two weeks, you may need to rebuild the search index. You may also receive a message 'Instant search encountered a problem while trying to display search results. Modifying your query may resolve this problem' or 'Outlook cannot perform your search.'

1. Choose File | Options | Search
2. In the 'Change the Outlook stores indexed by Windows Search', click Indexing Options
3. Select Advanced.
4. In the Troubleshooting section, select Rebuild.
5. Select Close when finished.
6. Click OK to close out of options.

This Microsoft support article has more detailed information on search issues and troubleshooting tips - https://support.microsoft.com/en-us/help/2769651/outlook-search-returns-no-matches-found

Office 2016 Mac Search Not Working Remotely

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Outlook for Mac

In Microsoft Outlook 2016 for Mac, you receive a 'No Results' message when you try to search for an email message or apply a filter to a folder, and task items are not displayed in the Tasks folder. Additionally, when you search for mail items by using the Mac OS native Spotlight Search, your search is unsuccessful.

Office 2016 Mac Search Not Working Windows 10

This Microsoft support article has more detailed information Outlook for Mac search returns 'No Results,' and task items are not displayed