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Event ID: 2050 Source: MSExchangeDSAccess

Level
Description
Process <process name> (PID=Process_ID). The shared memory heap could not be created.
Comments
 
This issue occurs when the Davex.dll and Exprox.dll files are not running in the Inetinfo.exe process. See ME926085 for information on fixing this problem.

This issue may occur if the ExchangeApplicationPool application pool is deleted from the application pools in Internet Information Services (IIS). See ME906907 to solve this problem.

As per Microsoft: "This event indicates that DSAccess service startup will fail because it failed to create the shared memory heap. This may be caused by internal Epoxy failures, running out of memory generally, or too many processes running DSAccess. Epoxy has a limit of 10 processes per heap". See MSEX2K3DB for additional information about this event.
This issue may occur when the Exchange virtual directory is either not running in the correct application pool, or when the ExchangeApplicationPool property has the incorrect identity. See ME829167 and ME841546 to fix this problem.

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