Windows 10 TP 9926 Start button and Update Center not working?

Question

Windows

Updated from 8.1 licensed.
Everything that I did not find on the Internet does not work, namely:

Has anyone else encountered the problem of not working start, search and notification center? When you click on the icons, nothing happens at all. Tech support offers to roll back the updates. But can anyone solve the problem differently?
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akibkalo Jan 30, 2015 at 11:34 am#
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PowerShell in admin mode:
Get-appxpackage -all *shellexperience* -packagetype bundle |% {add-appxpackage -register -disabledevelopmentmode ($_.installlocation + “\appxmetadata\appxbundlemanifest.xml ”)}
Nothing helped me either, but somewhere on the answers.microsoft.com forums I found a batch file that helped me:
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /V EnableXamlStartMenu /T REG_DWORD /D 1 /F
taskkill /f /im explorer.exe
start explorer.exe

I also found advice to enable User Account Control, but also to no avail.
The batch file above helped many, but either I'm doing it wrong, or something)

Answer 1

To make it work, you need to add a parameter for the 32-bit version
EnableXamlStartMenu DWORD 32 = 0

Answer 2

It is strange that before the "update" they did not find advice not to update working machines to this preview version. It's not even a release candidate, beta, or alpha. Some things may work and some may not work at all.

Answer 3

When I turned off UAC in the registry through this EnableLUA (0) parameter in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System, the launch also stopped working. Turned it back on and it worked.