diff --git a/dlls/secur32/lsa.c b/dlls/secur32/lsa.c
index db0d61e7637..df510130afa 100644
--- a/dlls/secur32/lsa.c
+++ b/dlls/secur32/lsa.c
@@ -69,6 +69,13 @@ NTSTATUS WINAPI LsaFreeReturnBuffer(PVOID Buffer)
     return STATUS_SUCCESS;
 }
 
+NTSTATUS WINAPI LsaGetLogonSessionData(PLUID LogonId,
+        PSECURITY_LOGON_SESSION_DATA* ppLogonSessionData)
+{
+    FIXME("%p %p stub\n", LogonId, ppLogonSessionData);
+    return STATUS_SUCCESS;
+}
+
 NTSTATUS WINAPI LsaLookupAuthenticationPackage(HANDLE LsaHandle,
         PLSA_STRING PackageName, PULONG AuthenticationPackage)
 {
diff --git a/dlls/secur32/secur32.spec b/dlls/secur32/secur32.spec
index 9e3be02c168..a71fee6499c 100644
--- a/dlls/secur32/secur32.spec
+++ b/dlls/secur32/secur32.spec
@@ -37,7 +37,7 @@
 @ stdcall LsaDeregisterLogonProcess(long)
 @ stdcall LsaEnumerateLogonSessions(ptr ptr)
 @ stdcall LsaFreeReturnBuffer(ptr)
-@ stub LsaGetLogonSessionData
+@ stdcall LsaGetLogonSessionData(ptr ptr)
 @ stub LsaLogonUser
 @ stdcall LsaLookupAuthenticationPackage(ptr ptr ptr)
 @ stub LsaRegisterLogonProcess
diff --git a/include/ntsecapi.h b/include/ntsecapi.h
index 8ef61674e3f..cedd20ce94c 100644
--- a/include/ntsecapi.h
+++ b/include/ntsecapi.h
@@ -235,6 +235,21 @@ typedef struct _POLICY_MODIFICATION_INFO
     LARGE_INTEGER DatabaseCreationTime;
 } POLICY_MODIFICATION_INFO, *PPOLICY_MODIFICATION_INFO;
 
+typedef struct _SECURITY_LOGON_SESSION_DATA {
+    ULONG Size;
+    LUID LogonId;
+    LSA_UNICODE_STRING UserName;
+    LSA_UNICODE_STRING LogonDomain;
+    LSA_UNICODE_STRING AuthenticationPackage;
+    ULONG LogonType;
+    ULONG Session;
+    PSID Sid;
+    LARGE_INTEGER LogonTime;
+    LSA_UNICODE_STRING LogonServer;
+    LSA_UNICODE_STRING DnsDomainName;
+    LSA_UNICODE_STRING Upn;
+} SECURITY_LOGON_SESSION_DATA, *PSECURITY_LOGON_SESSION_DATA;
+
 typedef struct
 {
     SID_NAME_USE Use;