Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I had this issue today after I changed my password earlier this week. It began popping up once our main Site Library was changed, and it could not get the new files.
I decided to go down the rabbit hole of trying the new client, and the process of setting it up required me to stop syncing my current library, rename that folder, and then adding a registry value to enable the addition of my work account. That worked great, even with 2-factor authentication enabled. However, I was only given access to my Personal OneDrive for Business. I read a little further on in the documentation that Site Libraries would not be supported in the new client yet, so I opened Groove.exe back up and setup the site again like a fresh install. It worked just fine also, without having to dig into any Office caches or anything.
I really appreciate the ease of setup of this new OneDrive client, and really hope to see Site Libraries added soon, since that's the main thing we use here.