Postpone installation of updates longer than 4 hours on Windows 7 and 8

When there are new updates available for your installation of Windows 7 or 8, it prompts you with a Window asking you to either restart the computer or to postpone the installation for 10 minutes, one hour or four hours. Either option may not be the best sometimes, so why not postpone it by a full day in the first place? To achieve that, open the Local Group Policy Editor by searching for group policy in Windows' main menu.

In the left pane, navigate to Local Computer Policy > Computer Configuration > Administrative Templates > Windows Components > Windows Update. Click it once and select Re-prompt for restart with scheduled installations. Double-click it and check the Enabled checkbox. Now a counterbox becomes available on which you can specify a number of minutes, enter 1440 for a whole day, then apply the changes.

Open Local Group Policy Editor in Windows 8

The times are over where you just hit a key and typed everything you needed in to get there. Now you need to learn key combinations or know how to get to the items you need by clicking your way through. System items such as the Group Policy Editor that are usually hidden deep within some system folders are an especially hard case - that's why I'll show you the easiest way to get there here.

- open the Charms menu by hovering your cursor over the top-right corner and
- click the Search charm. Afterwards
- click on Settings on the right pane and
- enter policy:

Update: The Local Group Policy Editor is only included in Windows 8 Pro, but not in Windows 8 Home. Thanks to Mahmood and Dave for pointing that out.