iTunes error 4007: Cloud Music Library cannot be updated

I tried running a sync again this morning and it still error'd out with 4007. My Mac is connected with ethernet, so I decided to try syncing again but this time hotspotting from my phone and it went through. But, I did get a bunch of iCloud duplicates showing up and Matched items that were greyed out... the same songs but with different times. Obviously, a new version in the store. I will try later this week to see if my ethernet connection begins to work again. I have been a Match subscriber since it launched in 2011 and have never seen this error resolved by having to hotspot.

I've had this since yesterday, and I see other recent support posts about this issue suggesting it's been going on for at least 5 days. I believe it's a server-side issue. Reddit posts indicate this is an issue that pops up every once in a while and then goes away. Very annoying!

Once I was finally able to complete a Cloud sync I had numerous duplicates of either previously Matched songs or some greyed out and labelled as "Waiting". I deleted all these duplicates and where I had an option to re-download a Matched version (signified by a download arrow), I did. I have not had a problem since. My understanding is that the Music store has a new version of the song that requires matching.

I had this issue too on my desktop app since the morning of the 15th. Tried all the posted solutions to no avail. Hope it's server side, I spend quite a bit of time this weekend trying to figure it out.

Just updating again... so today I was able to run a full sync on my home wifi and also direct connection with ethernet. However, occasionally in both cases I did get a popup error. I just ran it again and it would go through. This makes me believe this problem is on Apple's side.

Three days have passed, and nothing has been resolved. I don't encounter any 4007 or 4010 errors (not even a 9097 error), but the library syncing process is extremely slow. Once it finally stops, there are numerous duplicate songs in my previously matched tracks.

The assistance provided is inadequate, as they can only guide you through basic procedures such as signing out and disabling sync.

Is there any Apple manager here who can confirm a server-side issue and provide an update on the resolution?

I have the same issue since this morning only on Desktop.

Do you have any new information about this error? I've had this repeatedly since yesterday and it's really painful.

The issue resolved by itself after about less than a day for me, I only had this issue on macOS not iOS.