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do It by registry<br />
1. run regedit<br />
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2. Now drill down as follows: HKEY_LOCAL_MACHINE -&gt; SOFTWARE -&gt; Policies -&gt; Microsoft -&gt; Windows -&gt; WindowsUpdate<br />
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3.Right click on the right hand side of the window that’s open near where you see the “(Default) | REG_Z” key, then hit New -&gt; DWORD (32-bit) Value and name it NoAutoRebootWithLoggedOnUs<wbr />ers<br />
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4.Right click on NoAutoRebootWithLoggedOnUs<wbr />ers and select Modify, then give it a value of 1, which equates to “true”.
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I stepped away from my Win 10 PC, where I had about 20 windows open, and came back to find it installing Windows updates and restarting! &nbsp;Obviously this is NOT good for so many reasons. &nbsp;How can I prevent this in the future?
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I stepped away from my Win 10 PC, where I had about 20 windows open, and came back to find it installing Windows updates and restarting!  Obviously this is NOT good for so many reasons.  How can I prevent this in the future?

How to prevent Windows 10 from updating and restarting when I am using the PC?

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.