Resolve Vault error 15115

Vault on Windows, all versions

Issue

I'm seeing the follow error message in the Vault loader log:
 
00:42:24 ERROR 15115: begin read operation delay, code [1450]
00:42:24 ERROR 15116: end read operation delay, code [0]
         0    10   20   30   40   50   60   70   80   90   100
         |    |    |    |    |    |    |    |    |    |    |
         XXXXXX

Cause

The Vault has experienced a delay when trying to process files.

Resolution

UPDATED: June 17, 2019
The codes in the error message are informative.  in this case:
 
00:42:24 ERROR 15115: begin read operation delay, code [1450]
00:42:24 ERROR 15116: end read operation delay, code [0]
         0    10   20   30   40   50   60   70   80   90   100
         |    |    |    |    |    |    |    |    |    |    |
         XXXXXX

code [1450] is a Windows error message.  To obtain the meaning of this error message the following should be entered from a command prompt:

C:\> net helpmsg 1450
Insufficient system resources exist to complete the requested service.

This could mean that the Vault server was experiencing heavy traffic, or is running low on available RAM.  This message should be taken seriously and an investigation should be undertaken to determine the underlying cause.

code [0] is also a Windows error message:

C:\> net helpmsg 0
The operation completed successfully.

This means that despite the 1450 error experienced earlier, the task did eventually complete successfully.

If you saw a different return code such as:

00:22:31 ERROR 15116: end read operation delay, code [1450]

This would mean that the task did NOT complete successfully, and could cause much more serious problems.