Rebuild Exchange 2013 Search Indexes

1) Stop the following services:

Microsoft Exchange Search
Microsoft Exchange Search Host Controller

2) Locate the existing index directory folders.

They should be in the same path as the mailbox database with a GUID and word ‘Single’ at the end. With both services stopped, rename the GUID folder to GUID_OLD.

3) Restart the 2 services:

Microsoft Exchange Search
Microsoft Exchange Search Host Controller

The GUID folders should be recreated and reindexing of the databases started. It will take a fair amount of time for the rebuild. You can issue the following command to check the index status:

Get-MailboxDatabaseCopyStatus

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