Hi,
To resolve this, you can check these troubleshooting steps below:
Method 1: Check the auto-rotation setting
Step 1: Detach the Type cover/keyboard. Check if the
Rotation lock turned on. To do this, swipe in from the right edge of the screen, or select Action center
taskbar.
*Note: Rotation lock is undimmed when auto-rotation is locked. When auto-rotation is locked, the screen won’t rotate when you change the orientation of your Surface.
Step 2: Reattach your Surface typing cover, fold it back, and check to see if the display rotates automatically or receive a message as you turn your Surface.
*Note: Screen rotation on Surface should lock automatically when an attached Surface Typing Cover is in typing position.
Step 3: Restart your Surface.
*Make sure that the device is up-to-date.
Method 2: Check device Settings.
Step 1: Go to Settings > System
Step 2: On the left panel, select Tablet mode
Step 3: Under the When I sign in option, choose
Use the appropriate mode for my hardware. Also, under the When this device automatically switches tablet mode on or off ,
choose Always ask me before switching.
Step 4: After you have reconfigured the settings, restart your Surface.
If the problem persists, you can contact our Answer Desk should you need further support.
Let us know how it goes.