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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Compiler Warning (level 1) C4999

Error Message

UNKNOWN WARNING From the Help menu choose the Technical Support command or open the Technical Support help file for more information

Note the circumstances of the error, try to isolate the problem and create a reproducible test case, then contact Microsoft Product Support Services.

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