I ran into a problem in my computer. I can not save any file to desktop. I can create files on desktop, but for example if I try to save some file from photoshop or illustrator I get errors. This is a security feature in windows 10. To disable this, do the following. Turn off Controlled Folder Access:
  1. Select Start > Settings .
  2. Choose Update & security > Windows Defender.
  3. Select Open Windows Defender Security Center.
  4. Select Virus & threat protection, and then choose Virus & threat protection settings.
  5. Under Controlled folder access, turn it on or off.