When RoGetActivationFactory fails for something other than "class not available", it attempts fall back logic that drops the original error origination information, and ultimately returns "class not available" which is not very useful for debugging activation issues.
When RoGetActivationFactory fails for something other than "class not available", it attempts fall back logic that drops the original error origination information, and ultimately returns "class not available" which is not very useful for debugging activation issues.