If your tablet is not longer auto-rotating when changing orientation, then use this guide to troubleshoot and fix this problem.
On tablets and convertible devices, Windows 10 can control their motion sensor to rotate the desktop to landscape or portrait mode automatically depending on the orientation of the screen.
However, sometimes auto-rotation in desktop or tablet mode may stop working for no apparent reason, or the "Rotation lock" option may appear grayed out making it impossible for Windows 10 to turn the screen to the correct orientation automatically.
If auto-rotation isn't working after covering your troubleshooting basics, such as checking for updates and restarting your device, there are a number of steps you can follow to fix this issue.
Full story from the WindowsCentral blog...
Facebook
Twitter
Instagram