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Search does not work with Outlook 2021 / Exchange 2019

Philipp B 0 Reputation points
2025-01-13T07:52:29.83+00:00

Hi,

we have currently switched from our old IMAP-Server to Exchange 2019. Unfortunately, the search in Outlook 2019 does not seem to work anymore. Some of my client's computers either show no results, or results from the past two weeks only. I have already tried turning on the Exchange-Cache-Mode, the search worked (obviously because it creates a local copy of the inbox), but after turning it on outlook refused to update the inboxes unless i restarted the software. Updating the inboxes manually also didnt work anymore.

Looking forward to receive support.

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,404 questions
Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,396 questions
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  1. Alex Zhang-MSFT 3,315 Reputation points Microsoft Vendor
    2025-01-14T02:20:19.9933333+00:00

    Hello, @Philipp B,

    Welcome to the Microsoft Q&A platform!

    In order to resolve your issue, you can try some common troubleshooting like rebuilding the search index, ensuring your Exchange Server is updated, applying a registry fix to disable FAST search, restarting the Exchange search services, and considering moving mailboxes to another database.

    Here are some similar issues and relative documents for your reference:

    1.https://zcusa.951200.xyz/en-us/answers/questions/1618463/outlook-search-not-working-after-installing-exchan.

    2.https://support.microsoft.com/en-us/topic/incomplete-search-results-after-installing-an-exchange-server-2019-update-96ae2ef0-4569-4327-8d0c-8a3c1abdc1f6.

    If all of these methods fail, according to Service health in the M365 Admin Center, the issue regarding “Users' searches may fail and provide no results in the Outlook desktop client and Outlook on the web.” has been listed as an unresolved issue that Microsoft is working on, which means that the problem you are experiencing is a global issue.

    Now the development of code fix to trigger automated recovery service to restart infrastructure supporting search functionality and clear any errors is complete. Microsoft are preparing deployment procedures to implement the fix by the end of January 2025 and will closely monitor the progress, just as the screenshots shows below.

    User's image

    It is recommended for you to keep monitor this known issue in Microsoft 365 Health Portal for the next update if you have access to the M365 Admin Center. If not, I will update the thread here once I get additional information and the specific timeline for the Service Incident once fixed.

    Should you need more help on this, you can feel free to post back. 

    If the answer is helpful, please click on ACCEPT ANSWER as it could help other members of the Microsoft Q&A community who have similar questions and are looking for solutions.

    Thank you for your support and understanding.

    Best Wishes,

    Alex Zhang

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