for some reason Edge is not syncing anymore on macOS:
Sync isn't available right now
Couldn't connect to the sync server. Retrying...
I think it stopped working, after I enabled multi-factor authentication for my account in Azure. On my Windows clients sync is still working and it is limited to macOS.
I've tried uninstalling and re-installing Edge and tested other accounts from our organisation without MFA and sync works on macOS as expected. I disabled MFA for my account, but it did not solve the problem, so I re-enabled it.
Current status is, that I did not find a helpful solution via Google and have not other idea how to fix this issue. Maybe someone can help?