Hi @Md. Nasir Uddin ,
In our client outlook & outlook web search not working
Could you clarify a bit more about the exact symptom of the search issue? Is it that for mailboxes hosted on MAILDB02 and MAILDB04, no result can be returned when performing searching?
What‘s the detailed CU version of your Exchange servers? You can run the Exchange HealthChecker script to check the build number.
From the output of test-exchangesearch, seems like the two affected databased are all on DHK-EX-02, so it's suggested to try restarting the Microsoft Exchange Search service on that server and check if there would be any improvement.
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