DeleteSecurityContext function (sspi.h)

Article
06/02/2023

The DeleteSecurityContext function deletes the local data structures associated with the specified security context initiated by a previous call to the InitializeSecurityContext (General) function or the AcceptSecurityContext (General) function.

Syntax

KSECDDDECLSPEC SECURITY_STATUS SEC_ENTRY DeleteSecurityContext(
  [in] PCtxtHandle phContext
);

Parameters

[in] phContext

Handle of the security context to delete.

Warning

Do not use the same context handle in concurrent calls to DeleteSecurityContext. The API implementation in the security service providers is not thread-safe.

Return value

If the function succeeds or the handle has already been deleted, the return value is SEC_E_OK.

If the function fails, the return value can be the following error code:

Return code	Description
SEC_E_INVALID_HANDLE	The handle passed to the function is not valid.

Remarks

The DeleteSecurityContext function terminates a security context and frees associated resources.

The caller must call this function for a security context when that security context is no longer needed. This is true if the security context is partial, incomplete, rejected, or failed. After the security context is successfully deleted, further use of that security context is not permitted and the handle is no longer valid.

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	sspi.h (include Security.h)
Library	Secur32.lib
DLL	Secur32.dll