access-crt.md

description	Learn more about: access (CRT)
title	access (CRT)
ms.date	12/16/2019
api_name	access
api_location	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll
api_type	DLLExport
topic_type	apiref
f1_keywords	access CORECRT_IO/access
helpviewer_keywords	access function
ms.assetid	65197793-bd0a-41c3-9c29-18de2d95d9a6

access (CRT)

The Microsoft-implemented POSIX function name access is a deprecated alias for the _access function. By default, it generates Compiler warning (level 3) C4996. The name is deprecated because it doesn't follow the Standard C rules for implementation-specific names. However, the function is still supported.

We recommend you use _access or the security-enhanced _access_s function instead. Or, you can continue to use this function name, and disable the warning. For more information, see Turn off the warning and POSIX function names.