Microsoft Exchange information store service stops responding

There are numerous reasons why this could be happening. What service pack (SP) are you running on the Exchange Server? Not knowing which version of Exchange Server you're using, I would recommend you get the latest Exchange service pack and install it. You can also reference the following Microsoft Knowledge Base articles:

• KB article 890555: The Store.exe process may unexpectedly quit at random times in Exchange 2000 Server or in Exchange Server 2003

• KB article 829207: Microsoft Exchange information store service stops responding when a store event sink runs in Exchange 2000 Server

• KB article 843566: The Microsoft Exchange information store service stops responding in Exchange 2000 Server

• KB article 840055: Information store stops responding in Exchange 2000 Server or in Exchange Server 2003

• KB article 894622: The Microsoft Exchange information store service stops responding during deep folder traversal in Exchange Server 2003

As you can see, there are many possible explanations for the Exchange information store to suddenly stop responding and these are dependent on your Exchange Server version, what service packs you have installed, and other services running on the Exchange server (e.g., event sinks, etc.) among other factors.

Do you have comments on this Ask the Expert Q&A? Let us know.

Related information from SearchExchange.com:

FAQ: Exchange Server information store issues

Tip: Common Exchange Server 2003 information store problems

Expert Advice: Store terminates after attaching documents via OWA

Reference Center: Exchange Server information store