Reseed the search catalog

Artikel
01/27/2023

Applies to: Exchange Server 2013

If the content index catalog for a mailbox database copy gets corrupted, you may need to reseed the catalog. Corrupted content indexes are indicated in the Application event log by the following event.

Event ID	Level	Source	Details
123	Error	ExchangeStoreDB	At <timestamp> the Microsoft Exchange Information Store Database <identity> copy on this server experienced a corrupted search catalog. Consult the event log on the server for other "ExchangeStoreDb" and "MSExchange Search Indexer" events for more specific information about the failure. Reseeding the catalog is recommended via the 'Update-MailboxDatabaseCopy' task.

If the mailbox database copy is located on a server that is part of a database availability group (DAG), you can reseed the content index catalog from another DAG member.

If the mailbox database copy is the only copy, you have to manually create a new content index catalog.

For other management tasks related to Exchange Search, see Exchange Search procedures.

What do you need to know before you begin?

Estimated time to complete: 2 minutes. Actual reseeding time may vary depending on the size of the content index catalog being reseeded.
You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the "Exchange Search" entry in the Recipients Permissions topic.
For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard shortcuts in the Exchange admin center.

Having problems? Ask for help in the Exchange forums. Visit the forums at Exchange Server.

Reseed the content index catalog if the mailbox database is part of a DAG

Use one of the following procedures if the mailbox database is located on a server that is part of a DAG.

Reseed the content index catalog from any source

This example reseeds the content index catalog for the database copy DB1 on Mailbox server MBX1 from any source server in the DAG that has a copy of the database.

Update-MailboxDatabaseCopy -Identity DB1\MBX1 -CatalogOnly

For detailed syntax and parameter information, see Update-MailboxDatabaseCopy.

Reseed the content index catalog from a specific source

This example reseeds the content index catalog for the database copy DB1 on Mailbox server MBX1 from Mailbox server MBX2, which also has a copy of the database.

Update-MailboxDatabaseCopy -Identity DB1\MBX1 -SourceServer MBX2 -CatalogOnly

For detailed syntax and parameter information, see Update-MailboxDatabaseCopy.

Reseed the content index catalog if there is only one copy of the mailbox database

If there is only one copy of the mailbox database, you have to manually reseed the search catalog by recreating the content index catalog.

Run the following commands to stop the Microsoft Exchange Search and Microsoft Exchange Search Host Controller services.
```
Stop-Service MSExchangeFastSearch
```
```
Stop-Service HostControllerService
```
Delete, move, or rename the folder that contains the Exchange content index catalog. This folder is named %ExchangeInstallPath%Mailbox\<name of mailbox database>_Catalog\<GUID>12.1.Single. For example, you might rename the folder C:\Program Files\Microsoft\Exchange Server\V15\Mailbox\Mailbox Database 0657134726_Catalog\F0627A72-9F1D-494A-839A-D7C915C279DB12.1.Single_OLD.

Note

Deleting this folder will make additional disk space available. Alternatively, you might want to rename or move the folder to keep it for troubleshooting purposes.
Run the following commands to restart the Microsoft Exchange Search and Microsoft Exchange Search Host Controller services.
```
Start-Service MSExchangeFastSearch
```
```
Start-Service HostControllerService
```
After you restart these services, Exchange Search will rebuild the content index catalog.

How do you know this worked?

It might take a while for Exchange Search to reseed the content index catalog. Run the following command to display the status of the reseeding process.

Get-MailboxDatabaseCopyStatus | FL Name,*Index*

When the reseeding of the search catalog is in progress, the value of the ContentIndexState property is Crawling. When the reseeding is complete, this value is changed to Healthy.

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