Keep my computer updating
When it launched, Windows 10 quickly developed a reputation for rebooting entirely on its own timeline, as opposed to yours.
The Windows 10 Anniversary Update introduced the concept of “Active Hours,” which could be used to limit updates to off-hours when the machine was not in use, but you can’t always depend on such timers to prevent unwanted behavior — get stuck working late at night, and you could still be impacted by a surprise reboot at an inconvenient moment. First, open the Administrative Tools section of the Control Panel.
That’s not something Extreme Tech formally recommends, due to the risky nature of opting out of security updates, but it’s available should you choose to avail yourself of it.
Another way for non-Insiders to control when Windows 10 restarts following an update is through the Control Panel.
Most of the time an up-to-date operating system will improve the reliability, security and speed of your computer greatly.
Not to mention that new i Pod or i Touch you just got, won't work with Widows XP Sevice Pack 2.
Windows 10, like previous versions of Microsoft’s operating system, often needs to reboot to action an update, and will occasionally do so at the least appropriate moment -- as this pro-gamer can testify.
While Windows 10 updates are mandatory, you can control (to a degree) when they install, and more importantly if and when Windows 10 restarts afterwards. If you’re a Windows Insider, the maximum duration has been increased to 18 hours, and there’s also a new Restart options screen which lets you choose when the OS should finish updates and reboot.