Hi MurugananthamR,
Greetings!
Thank you for posting in Microsoft Community.
I'm sorry to hear about the cursor issue on your Surface. I appreciate the effort in trying to get in touch with the Customer support.
Please perform the methods below:
- Run the Surface Diagnostic Toolkit and check the settings for new Windows Update.
- Run the System File Checker.
- Install the drivers package. Check the specific OS build of your Windows Settings> System> About. Download the driver and firmware for Surface, choose Surface Pro 6 and click download on the next page. Please choose the .msi file that matches your current OS Build and click Next. After the download, runand installthe .msi then Restart the Surface Device.
- Uninstall the Surface Type Cover Filter Device. Search for device manager on the search tab > expand Keyboards > Right-click Surface Type Cover Filter Device. > Select Uninstall > Ok > Restart the device then test the mouse cursor.
Let me know how this goes.