A shared folder in one drive, cannot be synced to explorer. Option no longer available

UPDATE - Suddenly without any MS updates being applied, my OneDrive syncing of our shared folder tree is WORKING AGAIN. See the snip below. Today, March 3, 2025 about 10:30am pacific time, our shared folder tree is again shown in File Manager. Before the failure, the header shared folder used to be called "Documents 1", but now is called "Documents - 's files".

So, I will be the happiest guy if this syncing of our shared data tree stays in effect since this is the way OneDrive has worked for us for many years.

Still not working for me. Out of curiosity, if you open your Onedrive client and go to Account - Choose folders, do you correctly see the shared folders in there too?

Still not working for me ...

If I look in OneDrive > Settings > Account I can see all my personal files and folders that are backed-up and syncing with OneDrive. That bit is working fine and I can 'share' data between my PC and laptop as normal.

There is no sign of any shared folder at that point.

I first noticed that 'something was wrong' when I spotted the entirety of my share folder structure in the Recycle Bin. Perhaps foolishly I attempted to recover it from there which Windows did but in doing so created an unshared copy in my personal OneDrive space.

OneDrive seems to have fallen back to be 'personal' only - no longer supporting shared data.

Of course. The folder is there - marked as being shared from someone.

The same appears on windows explorer but just a shortcut

You do not see shared folders in Account - Choose folders, you only see your local folders you want to be backed up by OneDrive.

When a folder is shared with you, the folder will initially show up in your online view of your OneDrive folders under "Shared With You". Traditionally, to merge the Shared folder into your OneDrive local files, you would click the menu item "Add shortcut to My Files".

Then OneDrive would merge all the folders and files in the Shared drive down to your local PC OneDrive folder tree. All of these shared folders and files would have the little check mark and mini person icon indicating a shared file on the File Manager list. See the snip below:

I have always set the OneDrive advanced option "Files On-Demand" to OFF, so that all the shared files and folders are also fully resident on my local PC. In the snip above the shared PDF file "Treasurer Financial Report 2025-02-27.pdf is a file shared with me from our master server. Any changes I make to that file would be reflected back on the server and also on all other peoples local PCs having the same share defined.

If you look at the properties of the "Treasurer Financial Report" pdf file, you'll see it listed as "This item is shared" as below:

So, something happened a week ago, on February 22nd, that removed all these shared folders and files on the local drive. The shared folder tree became only visible in the On-Line OneDrive view. Then about a week later, on March 3rd, OneDrive Sync and Backup returned to its traditional operation with all the shared folders and files again synced down to my both of my local PCs.

I cannot explain why OneDrive stopped working on February 22nd, but for me on March 3rd, OneDrive suddenly started working again with all the shared folders and files resident on my local PCs.