Problem with links to OneDrive files

[Petrol]

I have created read-only links to share some of my OneDrive files. For the past few years they have worked well, but now I find that I can't open the target files through the link. I can open them directly in OneDrive (e.g. through Word or File Explorer_ but when I click the link it opens OneDrive.live.com and the rest of the browser window (below the menu and toolbar) is completely blank. I have tried re-creating the link, and the same thing happens.

As I said before, I have been using these files for a couple of years without trouble and the difficulty has only arisen this week. I'm not aware of having changed anything relevant, and restarting doesn't help. I do have the OneDrive icon in the system tray.

I have looked at the MS support page for OneDrive, but nothing there helps. When I go to ask the MS support team and specify that the issue concerns OneDrive, I get exactly the same effect: a onedrive.live.com window that is blank. I suspect the problem is something fairly basic, but can't figure out what it is. Does anyone have any suggestions?
PS: I am using Microsoft 365 under Windows 11 on a Lenovo laptop.