@@ -18,6 +18,7 @@
 #include <span>
 
 #ifdef _WIN32
+#include <system_error>
 
 #ifdef UUID_SYSTEM_GENERATOR
 #include <objbase.h>
@@ -613,7 +614,11 @@ namespace uuids
 #ifdef _WIN32
 
          GUID newId;
-         ::CoCreateGuid(&newId);
+         HRESULT hr = ::CoCreateGuid(&newId);
+         if( hr < 0 )
+         {
+            throw std::system_error(hr, std::system_category(), "CoCreateGuid");
+         }
 
          std::array<uint8_t, 16> bytes =
          { {