OWA Search Not Returning Results – Event ID 9842
Sometimes, the search feature in Outlook Web App (OWA) fails to return any results, regardless of the keywords used. This issue is often related to a malfunction in the Exchange search indexing service.
Upon checking the Event Viewer, you may find an error with Event ID 9842, which indicates a problem with the Exchange search engine.
How to Fix Event ID 9842 in OWA
To restore the search functionality, a simple restart of the related services is often sufficient.
Recommended procedure
- Restart the Microsoft Exchange Search Indexer service
- Restart the Microsoft Exchange Information Store service
After restarting, wait a few minutes and check if the OWA search functionality is working again.
Note
In some cases, a manual re-indexing of the databases might be required, especially if the issue persists after restarting the services.
