In Windows 10 build 9926 the Windows Update settings are locked in "Automatic update installation (recommended)". The user can not change this function. Of course we did not like this, even if it is a preview version. If you do not like it, you can change it with the following tweak.
To change the Windows Update settings to Windows 10 build 9926 you should do the following:
Open Registry Editor in the familiar way. If you are not a reader of iGuRu.gr, type the Win + R keys together, write regedit in the run window that appears, and press enter. If you open a UAC window, accept it to proceed to the Registry Editor.
Follow the following path:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ WindowsUpdate \ Auto Update
and set the DWORD value AUOptions at one of the following values:
1: Never check for updates
2: Check for updates but let me choose if to download and install them (I can check for updates but I can choose which ones to install)
3: Download updates but let me choose whether to install them (Download updates but pre-install notification)
4: Install updates automatically
Registration in iGuRu.gr via Email
That was, restart your computer.