I don't want to use ModernMedia UI. I didn't ask for more details because I don't play music or DVDs with WMC (or Media Player for that matter) so it doesn't matter to me whether metadata downloads are on or off. I've also been pretty busy with other things. However, as part of my investigations into all the issues that people have, I have tried it with every recent version of Windows 10 (including 32bit) and every version of those DLLs I have. My conclusion was that replacing the DLLs made no difference. In any case, I don't believe that the DLLs we are changing are used for music, only for video.