Okay, after I upgraded Windows 10 to Pro with the key from the MS Page I see the update but now there is an error in Windows Update (0x80246017)

Edit: After an horrible process of up-/down-...

I checked my registry and BranchName is fbl_impressive, but I don't have the Data named Ring & I have another Data named ThresholdOptedin. I even deleted the ThresholdOptedin and added Ring but still...

Yes, I'm signed in and in the fast ring, but still no new updates. The required updates KB3038939 & KB3040021 are both installed.

Hi, First: thanks for the quick response
but I did all like it is described in the two threads but I doesn't show any updates.
Is there something I have to do first like an special update?
Edit:...

How do I get the new build? I have no button to check if there is a new build. I'm in the fast ring but there is no new build if I check for updates.