This is a simple hack tested by me to remove activate Windows watermark for Windows 10 that is free now but after 1 year after the installation displays this message on the bottom right corner.
Steps to remove activate Windows watermark
- Press Windows + R on the keyboard to start Run command
- In the Open window type regedit and click OK
- Click Yes on the next window
- Go to HKEY_LOCAL_MACHINE > SYSTEM > CurentControlSet > Services > SVSVC Folder
- Right click on the Start file > Click Modify > Change Value Data to 4 > Press OK
- Restart your PC
- Done
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