Edge not synching favorites

Edge was synching favorites nicely till recently - probably until the Fall Creators Update. Now it's stopped synching. I have 2 computers with the same windows login account and both set to synch in both windows and edge.

I've tried an alternative dns server (8.8.8.8) which helped some people with the problem a year ago but it didn't fix it.

Anyone else have this problem?

Well, after a week or so of not syncing, it's just come good.

Either someone at Microsoft did something on a server somewhere to fix it, or else doing a BIOS update on my Dell xps13 9360 just nudged it into working properly.

Anyway, all good now.