Event 1009 MSExchangeFastSearch Exchange 2016

Copper Contributor

Hello Team,


Environment consists of 2 exchange 2016 servers 

Both servers are in virtual environment

Exchange 2016 CU23 and KB5024296 installed


Event 1006 is flooded in the exchange server which has the passive copy


Replication service restarted

Content Index rebuild

Please suggest



1 Reply

Hi @Ajit Terdalkar 


you can ignore this error as per the below confirmation from Microsoft.

Event ID 1009 flood application log for lagged database copies in Exchange Server 2016 - Exchange | ...



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