What
Some features can be switched on through managed policy settings, the settings an organization's administrator installs. Previously policy settings counted for this unless they came from the per-user part of the Windows registry.
Now they count only when the policy comes from a location owned by an administrator, or is supplied by a parent program.
Why
Policy settings stored somewhere an ordinary user can write to can no longer switch on features meant to be controlled by managed policy.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
Which features are switched on this way is not known.