GetFileAttributesTransactedA function (winbase.h)

[Microsoft strongly recommends developers utilize alternative means to achieve your application’s needs. Many scenarios that TxF was developed for can be achieved through simpler and more readily available techniques. Furthermore, TxF may not be available in future versions of Microsoft Windows. For more information, and alternatives to TxF, please see Alternatives to using Transactional NTFS.]

Retrieves file system attributes for a specified file or directory as a transacted operation.


BOOL GetFileAttributesTransactedA(
  [in]  LPCSTR                 lpFileName,
  [in]  GET_FILEEX_INFO_LEVELS fInfoLevelId,
  [out] LPVOID                 lpFileInformation,
  [in]  HANDLE                 hTransaction


[in] lpFileName

The name of the file or directory.

By default, the name is limited to MAX_PATH characters. To extend this limit to 32,767 wide characters, prepend "\\?\" to the path. For more information, see Naming Files, Paths, and Namespaces.


Starting with Windows 10, Version 1607, you can opt-in to remove the MAX_PATH limitation without prepending "\\?\". See the "Maximum Path Length Limitation" section of Naming Files, Paths, and Namespaces for details.

The file or directory must reside on the local computer; otherwise, the function fails and the last error code is set to ERROR_TRANSACTIONS_UNSUPPORTED_REMOTE.

[in] fInfoLevelId

The level of attribute information to retrieve.

This parameter can be the following value from the GET_FILEEX_INFO_LEVELS enumeration.

Value Meaning
The lpFileInformation parameter is a WIN32_FILE_ATTRIBUTE_DATA structure.

[out] lpFileInformation

A pointer to a buffer that receives the attribute information.

The type of attribute information that is stored into this buffer is determined by the value of fInfoLevelId. If the fInfoLevelId parameter is GetFileExInfoStandard then this parameter points to a WIN32_FILE_ATTRIBUTE_DATA structure

[in] hTransaction

A handle to the transaction. This handle is returned by the CreateTransaction function.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero (0). To get extended error information, call GetLastError.


When GetFileAttributesTransacted is called on a directory that is a mounted folder, it returns the attributes of the directory, not those of the root directory in the volume that the mounted folder associates with the directory. To obtain the file attributes of the associated volume, call GetVolumeNameForVolumeMountPoint to obtain the name of the associated volume. Then use the resulting name in a call to GetFileAttributesTransacted. The results are the attributes of the root directory on the associated volume.

In Windows 8 and Windows Server 2012, this function is supported by the following technologies.

Technology Supported
Server Message Block (SMB) 3.0 protocol No
SMB 3.0 Transparent Failover (TFO) No
SMB 3.0 with Scale-out File Shares (SO) No
Cluster Shared Volume File System (CsvFS) No
Resilient File System (ReFS) No

SMB 3.0 does not support TxF.

Symbolic links:  If the path points to a symbolic link, the function returns attributes for the symbolic link.

Transacted Operations

If a file is open for modification in a transaction, no other thread can open the file for modification until the transaction is committed. Conversely, if a file is open for modification outside of a transaction, no transacted thread can open the file for modification until the non-transacted handle is closed. If a non-transacted thread has a handle opened to modify a file, a call to GetFileAttributesTransacted for that file will fail with an ERROR_TRANSACTIONAL_CONFLICT error.


The winbase.h header defines GetFileAttributesTransacted as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.


Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header winbase.h (include Windows.h)
Library Kernel32.lib
DLL Kernel32.dll

See also


File Attribute Constants

File Management Functions





Symbolic Links

Transactional NTFS