Windows 10: Windows Insider preview- issue with windows defender

I installed windows insider pro preview. Build 20161. Now I am not able to turn on windows defender or firewall, I am also not able to add any user accounts. How do I roll back from Insider Preview Build 20161.
The computer does not allow me to add any user account. And turn on firewall. Is this due to the Windows 10 Pro Insider Preview?

:)

 

Get a Windows 10 licence for free if you register on Windows Insider

from Gabe Aul today : http://blogs.windows.com/bloggingwi...changes-to-windows-10-insider-preview-builds/

well from the sounds of it, anyone who UPGRADED to windows 10 Preview wont have to do anything as it already has your Serial win 7/8.1 key logged.

The crux of it is this:

• Do you want to continue as a Windows Insider and keep getting preview builds after 7/29?
• Or do you want to upgrade your Genuine Windows 7 or Windows 8.1 system that has been getting Windows 10 Insider Preview builds to the 7/29 release and stop being an Insider?

“I want to continue as a Windows Insider!” If you want to continue as a Windows Insider past 7/29 there is nothing you need to do. You’re already opted in and receiving builds in the Fast or Slow ring depending upon your selection. This is prerelease software and is activated with a prerelease key. Each individual build will expire after a time, but you’ll continue to receive new builds so by the time an older prerelease build expires you’ll have received a new one. Since we’re continuing the Windows Insider Program you’ll be able to continue receiving builds and those builds will continue to be activated under the terms of the Windows Insider Program. We provide ISOs for these builds for recovery from any significant problems, but they are still pre-release software. As part of the program we’ll upgrade Insiders to what is for all intents and purposes the same build as what other customers will get on 7/29, but that will be just another build for Insiders, and those who stay in the program will simply get the next build after as well.

“I want to opt out of the Windows Insider Program on 7/29.” If you decide to opt-out of the program and upgrade to the 7/29 build you will be subject to exactly the same terms and conditions that govern the offer* that was extended to all Genuine Windows 7 and 8.1 customers. This is not a path to attain a license for Windows XP or Windows Vista systems. If your system upgraded from a Genuine Windows 7 or Windows 8.1 license it will remain activated, but if not, you will be required to roll back to your previous OS version or acquire a new Windows 10 license. If you do not roll back or acquire a new license the build will eventually expire.

It is our hope that the vast majority of Windows Insiders who have been with us since we announced the program last year will continue forward, and it was in that light that we authored the blog post about upcoming changes to the program. I regret that this caused confusion about who was or was not eligible for the Windows 10 upgrade offer, but hope that this helps to clarify.

Thanks,
g

 

Get a Windows 10 licence for free if you register on Windows Insider

Wow, sounds like those who are bandwidth limited could be screwed, or find a internet cafe or library to get the needed ISO.

 

Windows 10 Insider Preview 16215.1000 (rs_prerelease)

Since you've already tried all the necessary troubleshooting steps, we suggest that you roll back to your previous version and then try installing the
Windows 10 Insider Preview 16215.1000 (rs_prerelease) again.

If the issue persists, roll back to your previous version. This time, we recommend not installing
Windows 10 Insider Preview 16215.1000 (rs_prerelease); then, send a feedback using your built-in feedback application to inform the programmers about your concern.

Regards.