I realized that most of my problems with 14942 also applied to 14946 and it was mostly caused by Adguard. My first attempt to upgrade from 14936 (I reverted back from 14942 because of the problems with the internet connection failing all the time) resulted in an installation stucked at 81%. After waiting for an hour with no progress at all I powered off my Surface Book and restored back to 14936. After that I uninstalled Adguard and boom, the installation went right through. I tried to reinstall Adguard after the upgrade to 14946 without any problems. But the connection problems reoccured and I shut off Adguard. But there were still problems with my connection even if Adguard wasn't running at all and wasn't even started automatically with Windows. I had to completely deinstall it again to solve my connection problems. I'm now using the Adblock extension for Edge and everything seems to be fine. There is obviously a problem with the WFP driver in the recent two builds that prevents programs such as Adguard from working properly. Fortunately there is already an entry in the Feedback Hub for that problem. I think this is the same problem that is preventing third party AVs from running properly.
I can't install this build. My laptop turn off after "just a moment" is stuck and connect with defaultuser0 that I don't know its password.
I had to delete my history in Edge to get the new tab page to work again with showing the most visited sites and the newsfeed.
Updating my Insider PC to 14946 without perform a clean install. I hope that the "Just a moment" bug will not appear
I have never experienced such issue as that since I have been upgrading my Insider Previews. When people report it I kind of ponder on the reason they are getting it. Most time, as in the case with Windows 10, is caused by incompatible drivers, applications, etc.
Microsoft already knows about this bug. I didn't have the Just a moment bug but I get several ones related to Intel drivers. I hope that this will get fixed soon.