Stop WU service, clear contents of SoftwareDistribution folder, start WU service again, check for updates Probably a new build arriving soon anyway
And maybe check for install.esd in bt-sources folder, if exists delete the whole folder and run win update again.
Just have to keep trying until it sees the update, wait for a while, looks like a new build is on the cards today from the looks of Donas twitter
I had the same problem in the earlier build and I upgrade via ISO converted from ESD... And the Refresh Windows tool says that it can't do nothing because the tool doesn't support Spanish...
No point starting .76 installing if .79 arrives It's happened a couple of times to me too, eventually works 32bit wouldn't see .76 the other day, 64bit did, next day 32bit worked too