diff --git a/dlls/rpcrt4/rpc_server.c b/dlls/rpcrt4/rpc_server.c
index 84e8854194e..4778a5eb403 100644
--- a/dlls/rpcrt4/rpc_server.c
+++ b/dlls/rpcrt4/rpc_server.c
@@ -67,6 +67,7 @@ static RpcObjTypeMap *RpcObjTypeMaps;
 /* list of type RpcServerProtseq */
 static struct list protseqs = LIST_INIT(protseqs);
 static struct list server_interfaces = LIST_INIT(server_interfaces);
+static struct list server_registered_auth_info = LIST_INIT(server_registered_auth_info);
 
 static CRITICAL_SECTION server_cs;
 static CRITICAL_SECTION_DEBUG server_cs_debug =
@@ -86,6 +87,15 @@ static CRITICAL_SECTION_DEBUG listen_cs_debug =
 };
 static CRITICAL_SECTION listen_cs = { &listen_cs_debug, -1, 0, 0, 0, 0 };
 
+static CRITICAL_SECTION server_auth_info_cs;
+static CRITICAL_SECTION_DEBUG server_auth_info_cs_debug =
+{
+    0, 0, &server_auth_info_cs,
+    { &server_auth_info_cs_debug.ProcessLocksList, &server_auth_info_cs_debug.ProcessLocksList },
+      0, 0, { (DWORD_PTR)(__FILE__ ": server_auth_info_cs") }
+};
+static CRITICAL_SECTION server_auth_info_cs = { &server_auth_info_cs_debug, -1, 0, 0, 0, 0 };
+
 /* whether the server is currently listening */
 static BOOL std_listen;
 /* number of manual listeners (calls to RpcServerListen) */
@@ -1134,15 +1144,114 @@ RPC_STATUS WINAPI RpcObjectSetType( UUID* ObjUuid, UUID* TypeUuid )
   return RPC_S_OK;
 }
 
+struct rpc_server_registered_auth_info
+{
+    struct list entry;
+    TimeStamp exp;
+    CredHandle cred;
+    ULONG max_token;
+    USHORT auth_type;
+};
+
+RPC_STATUS RPCRT4_ServerGetRegisteredAuthInfo(
+    USHORT auth_type, CredHandle *cred, TimeStamp *exp, ULONG *max_token)
+{
+    RPC_STATUS status = RPC_S_UNKNOWN_AUTHN_SERVICE;
+    struct rpc_server_registered_auth_info *auth_info;
+
+    EnterCriticalSection(&server_auth_info_cs);
+    LIST_FOR_EACH_ENTRY(auth_info, &server_registered_auth_info, struct rpc_server_registered_auth_info, entry)
+    {
+        if (auth_info->auth_type == auth_type)
+        {
+            *cred = auth_info->cred;
+            *exp = auth_info->exp;
+            *max_token = auth_info->max_token;
+            status = RPC_S_OK;
+            break;
+        }
+    }
+    LeaveCriticalSection(&server_auth_info_cs);
+
+    return status;
+}
+
+void RPCRT4_ServerFreeAllRegisteredAuthInfo(void)
+{
+    struct rpc_server_registered_auth_info *auth_info, *cursor2;
+
+    EnterCriticalSection(&server_auth_info_cs);
+    LIST_FOR_EACH_ENTRY_SAFE(auth_info, cursor2, &server_registered_auth_info, struct rpc_server_registered_auth_info, entry)
+    {
+        FreeCredentialsHandle(&auth_info->cred);
+        HeapFree(GetProcessHeap(), 0, auth_info);
+    }
+    LeaveCriticalSection(&server_auth_info_cs);
+}
+
 /***********************************************************************
  *             RpcServerRegisterAuthInfoA (RPCRT4.@)
  */
 RPC_STATUS WINAPI RpcServerRegisterAuthInfoA( RPC_CSTR ServerPrincName, ULONG AuthnSvc, RPC_AUTH_KEY_RETRIEVAL_FN GetKeyFn,
                             LPVOID Arg )
 {
-  FIXME( "(%s,%u,%p,%p): stub\n", ServerPrincName, AuthnSvc, GetKeyFn, Arg );
-  
-  return RPC_S_UNKNOWN_AUTHN_SERVICE; /* We don't know any authentication services */
+    SECURITY_STATUS sec_status;
+    CredHandle cred;
+    TimeStamp exp;
+    ULONG package_count;
+    ULONG i;
+    PSecPkgInfoA packages;
+    ULONG max_token;
+    struct rpc_server_registered_auth_info *auth_info;
+
+    TRACE("(%s,%u,%p,%p)\n", ServerPrincName, AuthnSvc, GetKeyFn, Arg);
+
+    sec_status = EnumerateSecurityPackagesA(&package_count, &packages);
+    if (sec_status != SEC_E_OK)
+    {
+        ERR("EnumerateSecurityPackagesA failed with error 0x%08x\n",
+            sec_status);
+        return RPC_S_SEC_PKG_ERROR;
+    }
+
+    for (i = 0; i < package_count; i++)
+        if (packages[i].wRPCID == AuthnSvc)
+            break;
+
+    if (i == package_count)
+    {
+        WARN("unsupported AuthnSvc %u\n", AuthnSvc);
+        FreeContextBuffer(packages);
+        return RPC_S_UNKNOWN_AUTHN_SERVICE;
+    }
+    TRACE("found package %s for service %u\n", packages[i].Name,
+          AuthnSvc);
+    sec_status = AcquireCredentialsHandleA((SEC_CHAR *)ServerPrincName,
+                                           packages[i].Name,
+                                           SECPKG_CRED_INBOUND, NULL, NULL,
+                                           NULL, NULL, &cred, &exp);
+    max_token = packages[i].cbMaxToken;
+    FreeContextBuffer(packages);
+    if (sec_status != SEC_E_OK)
+        return RPC_S_SEC_PKG_ERROR;
+
+    auth_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*auth_info));
+    if (!auth_info)
+    {
+        FreeCredentialsHandle(&cred);
+        return RPC_S_OUT_OF_RESOURCES;
+    }
+
+    auth_info->exp = exp;
+    auth_info->cred = cred;
+    auth_info->max_token = max_token;
+    auth_info->auth_type = AuthnSvc;
+
+    EnterCriticalSection(&server_auth_info_cs);
+    list_add_tail(&server_registered_auth_info, &auth_info->entry);
+    LeaveCriticalSection(&server_auth_info_cs);
+
+    return RPC_S_OK;
 }
 
 /***********************************************************************
@@ -1151,9 +1260,63 @@ RPC_STATUS WINAPI RpcServerRegisterAuthInfoA( RPC_CSTR ServerPrincName, ULONG Au
 RPC_STATUS WINAPI RpcServerRegisterAuthInfoW( RPC_WSTR ServerPrincName, ULONG AuthnSvc, RPC_AUTH_KEY_RETRIEVAL_FN GetKeyFn,
                             LPVOID Arg )
 {
-  FIXME( "(%s,%u,%p,%p): stub\n", debugstr_w( ServerPrincName ), AuthnSvc, GetKeyFn, Arg );
-  
-  return RPC_S_UNKNOWN_AUTHN_SERVICE; /* We don't know any authentication services */
+    SECURITY_STATUS sec_status;
+    CredHandle cred;
+    TimeStamp exp;
+    ULONG package_count;
+    ULONG i;
+    PSecPkgInfoW packages;
+    ULONG max_token;
+    struct rpc_server_registered_auth_info *auth_info;
+
+    TRACE("(%s,%u,%p,%p)\n", debugstr_w(ServerPrincName), AuthnSvc, GetKeyFn, Arg);
+
+    sec_status = EnumerateSecurityPackagesW(&package_count, &packages);
+    if (sec_status != SEC_E_OK)
+    {
+        ERR("EnumerateSecurityPackagesW failed with error 0x%08x\n",
+            sec_status);
+        return RPC_S_SEC_PKG_ERROR;
+    }
+
+    for (i = 0; i < package_count; i++)
+        if (packages[i].wRPCID == AuthnSvc)
+            break;
+
+    if (i == package_count)
+    {
+        WARN("unsupported AuthnSvc %u\n", AuthnSvc);
+        FreeContextBuffer(packages);
+        return RPC_S_UNKNOWN_AUTHN_SERVICE;
+    }
+    TRACE("found package %s for service %u\n", debugstr_w(packages[i].Name),
+          AuthnSvc);
+    sec_status = AcquireCredentialsHandleW((SEC_WCHAR *)ServerPrincName,
+                                           packages[i].Name,
+                                           SECPKG_CRED_INBOUND, NULL, NULL,
+                                           NULL, NULL, &cred, &exp);
+    max_token = packages[i].cbMaxToken;
+    FreeContextBuffer(packages);
+    if (sec_status != SEC_E_OK)
+        return RPC_S_SEC_PKG_ERROR;
+
+    auth_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*auth_info));
+    if (!auth_info)
+    {
+        FreeCredentialsHandle(&cred);
+        return RPC_S_OUT_OF_RESOURCES;
+    }
+
+    auth_info->exp = exp;
+    auth_info->cred = cred;
+    auth_info->max_token = max_token;
+    auth_info->auth_type = AuthnSvc;
+
+    EnterCriticalSection(&server_auth_info_cs);
+    list_add_tail(&server_registered_auth_info, &auth_info->entry);
+    LeaveCriticalSection(&server_auth_info_cs);
+
+    return RPC_S_OK;
 }
 
 /***********************************************************************
diff --git a/dlls/rpcrt4/rpc_server.h b/dlls/rpcrt4/rpc_server.h
index cacce794e34..07fb6234cea 100644
--- a/dlls/rpcrt4/rpc_server.h
+++ b/dlls/rpcrt4/rpc_server.h
@@ -80,5 +80,6 @@ void RPCRT4_new_client(RpcConnection* conn);
 const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq);
 
 void RPCRT4_destroy_all_protseqs(void);
+void RPCRT4_ServerFreeAllRegisteredAuthInfo(void);
 
 #endif  /* __WINE_RPC_SERVER_H */
diff --git a/dlls/rpcrt4/rpcrt4_main.c b/dlls/rpcrt4/rpcrt4_main.c
index 67059e77a6f..a790ccbd568 100644
--- a/dlls/rpcrt4/rpcrt4_main.c
+++ b/dlls/rpcrt4/rpcrt4_main.c
@@ -127,6 +127,7 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 
     case DLL_PROCESS_DETACH:
         RPCRT4_destroy_all_protseqs();
+        RPCRT4_ServerFreeAllRegisteredAuthInfo();
         break;
     }