CloseEncryptedFileRaw function (winbase.h)

Closes an encrypted file after a backup or restore operation, and frees associated system resources. This is one of a group of Encrypted File System (EFS) functions that is intended to implement backup and restore functionality, while maintaining files in their encrypted state.


void CloseEncryptedFileRaw(
  [in] PVOID pvContext


[in] pvContext

A pointer to a system-defined context block. The OpenEncryptedFileRaw function returns the context block.

Return value



The CloseEncryptedFileRaw function frees allocated system resources such as the system-defined context block and closes the file.

The BackupRead and BackupWrite functions handle backup and restore of unencrypted files.

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

Technology Supported
Server Message Block (SMB) 3.0 protocol Yes
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

Note that SMB 3.0 does not support EFS on shares with continuous availability capability.


Requirement Value
Minimum supported client Windows XP Professional [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header winbase.h (include Windows.h)
Library Advapi32.lib
DLL Advapi32.dll
API set ext-ms-win-advapi32-encryptedfile-l1-1-0 (introduced in Windows 8)

See also



File Encryption

File Management Functions