The update reset some of the privacy settings. Microsoft has fixed the problem and update has been released again.
Here's more details on the problem "When upgrading from the initial Windows 10 release to the new version, four settings (whether to allow apps to use a unique advertiser ID, which apps are allowed to run in the background, whether Smartscreen Web filtering is enabled, and whether settings sync between devices) were reverted to their defaults, as if a fresh Windows installation had been performed. While for most users this made no difference, for those who'd disabled those features previously, the upgrade would silently revert those choices." http://arstechnica.com/information-technology/2015/11/windows-10-november-update-was-pulled-for-forgetting-privacy-settings-its-now-back/