Zune Marketplace disappeared today

It does not show as not available.  There is a link to download the track, but when I click it I get the media rights error.

Without trying to recreate those specific codes, let me GUESS what is happening, at least this is what happens to me.

Sometimes music that was available in the marketplace (and was downloaded) is no longer available. Occasionally, the same album or something very similar is released, perhaps with the MP3 option available for format purchase. Try this: move a track from the album by dragging it outside the Zune folder system, such as on your Desktop. Then open the Zune software.Highlight the album in your collection, then right click and choose More Information option in the marketplace. Does it show as "Not available"? That's a clear sign that the album is no longer available. Look for the same album elsewhere in the marketplace. If available, download it and delete the non-working version and its files.

The other situation you describe might be harder to pin down. Does it always happen when you try to download a new song? Have you tried other albums, other songs? Have you restarted the Zune software? Have you logged off and logged back into the Zune software user account?

Again, check to see all the keys describe on 7/20 post are installed.

When I try playing a DRM song I had previously downloaded through Zune, I get error code C00D11E2 (C00D271D).  When I try to download a new song, I get code C00D12F5.  Both are related to media usage rights.

No problems here downloading or playing downloaded DRM music through the marketplace using Zune software. I can also use the Groove player, both apps running on Windows 10 PC. I still can't stream music using Zune software so I have to preview music in Groove, if I wish, before downloading in Zune. Once downloaded I can p.lay it using Zune software. Haven't synced music with one of my players lately, but I believe it's working, certainly playback of previously synced music is. It does require syncing every 30 days.

As far as forgetting your log-in/password whatever, there must be a way to retrieve that. What you DON'T want to do is change your user ID, if you can help it. I think that causes all your downloaded DRM music to be unusable since it was downloaded under the previous user ID.

Make sure you install all the keys discussed in my July 20 post.

I haven't been able to play DRM music for a month and half or so by now.  I tried the trick to get marketplace to show up, ...which it did, but in the process, I somehow got logged out and could not log back in with my account.  So I lost DRM back then.