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Microsoft KB Archive/173458

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Knowledge Base

XCON: Event ID 9406 Occurs When Memory or Free Disk Space is Low

Article ID: 173458

Article Last Modified on 4/28/2005


  • Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q173458


The Microsoft Exchange Message Transfer Agent (MTA) may shut down and the following event may be recorded in the Windows NT Server Event Viewer Application log:

Event ID: 9406
Source: MSExchangeMTA
Category: Resource
There is not enough Performance Monitor memory to display the MTA Connections information. Stop attached Performance Monitors and re-start the MTA. [BASE TIMER 3] (14)


The server is running low on disk space and/or virtual memory.


Free up hard disk space by removing or deleting unneeded files. You should have at least 10MB of free space or the MTA will shut down automatically. You should also increase the size of the Windows NT Pagefile.

Additional query words: perfmon virtual bytes low

Keywords: KB173458