#DEFINE HKEY_CLASSES_ROOT -2147483648 ... cPfad = "" lcClassId = loAPI.readregistrystring(HKEY_CLASSES_ROOT,lcProgId + "\CLSID","") && Taken from an example if IsNull(lcClassId) lcClassId = "" ELSE * I get the correct classid cRSString = "Wow6432Node\CLSID\" + lcClassId cPfad = loApi.ReadRegistryString(HKEY_CLASSES_ROOT,; cRSString,; "InProcServer32") endif RETURN cPfadBut all I get is a Null-Value. What am I doing wrong?