diff --git a/PInvoke/Ole/Ole32/ObjBase.cs b/PInvoke/Ole/Ole32/ObjBase.cs
index 8b181d7d..2d64d5b9 100644
--- a/PInvoke/Ole/Ole32/ObjBase.cs
+++ b/PInvoke/Ole/Ole32/ObjBase.cs
@@ -445,7 +445,16 @@ namespace Vanara.PInvoke
 			CLSCTX_ACTIVATE_ARM32_SERVER = 0x2000000,
 
 			/// <summary>Used for loading Proxy/Stub DLLs.</summary>
-			CLSCTX_PS_DLL = 0x80000000
+			CLSCTX_PS_DLL = 0x80000000,
+
+			/// <summary>Combination of CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER.</summary>
+			CLSCTX_INPROC = CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER,
+
+			/// <summary>Combination of CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER.</summary>
+			CLSCTX_SERVER = CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER | CLSCTX_REMOTE_SERVER,
+
+			/// <summary>Combination of CLSCTX_SERVER | CLSCTX_INPROC_HANDLER.</summary>
+			CLSCTX_ALL = CLSCTX_SERVER | CLSCTX_INPROC_HANDLER,
 		}
 
 		/// <summary>