Strange error.

This started a couple of days before 10586, while still at 10565.
I rejoined Insider program from regular, retail, upgraded from W8.1 windows. Successfully transferred license to new MB and everything was fine, Than suddenly WU informed me that there is a problem with receiving future upgrades for insider program citing "Problems with security settings". I checked everything I knew about security settings and WD but for life of me I can't find anything wrong.
On top of that, what's even stranger, When 10586 started I found $Bt.... folder and completely downloaded 10586 but update didn't happen. I made ISO out of .esd and updated manually but still in neitherland with insider updates.
Fix Me doesn't fix anything of course.

Checking your account in Settings > Accounts > Your email and accounts, is there a Verify link?

If yes, you need to verify your account first. Screenshot from this tutorial: Microsoft Account - Add or Remove Trusted Devices - Windows 10 Forums

I don't have "Verify" because it's verified recently. Computer is registered with MS.

The only maybe wrong thing with security is Smart Screen being turned off. Wander if that's the problem ?

OK, that would have been too easy. Worth to try in any case.

Kari said:

OK, that would have been too easy. Worth to try in any case.

Smart Screen is turned off and all greyed out, how to turn that bloody thing on ?

Have you tried this:

Try to delete this whole key in registry and restart, it could be caused by incorrect values.

reg delete "HKLM\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /f

TairikuOkami said:

Try to delete this whole key in registry and restart, it could be caused by incorrect values.

reg delete "HKLM\SOFTWARE\Microsoft\WindowsSelfHost\Applicability" /f

Ok. turned on Smart Screen but obviously was not because of that. Than I deleted that line from registry and now it shows "Get started" button but doesn't start, still shows same after reboot. I'd rather not do reset as I don't want to loose installed programs.