Unable to allocate memory for entity . Reboot the computer. If that does not work, Contact Microsoft Technical Support. [ ] (14)

Details
Product: Exchange
Event ID: 59
Source: MSExchangeMTA
Version: 6.5.6940.0
Component: Microsoft Exchange Message Transfer Agent
Message: Unable to allocate memory for entity <object name>. Reboot the computer. If that does not work, Contact Microsoft Technical Support. [<value> <value> <value> <value>] (14)
   
Explanation

The message transfer agent (MTA) has failed to allocate and reserve memory from the operating system.

   
User Action

Free up the memory in use by closing any nonessential applications. Increase your system’s physical or virtual memory. Verify that there is enough disk space for the paging file to grow.

Related:

An error was detected on device %1 during a paging operation.

Details
Product: Windows Operating System
Event ID: 51
Source: Disk
Version: 5.2
Symbolic Name: IO_WARNING_PAGING_FAILURE
Message: An error was detected on device %1 during a paging operation.
   
Explanation

An input/output (I/O) request to a memory-mapped file failed and the operation was retried.

   
User Action

If these events are logged regularly on a primary system drive, replace the device. Otherwise, no user action is required.

Related: