Here are some reordered and simplified versions of the text:
a) A DUK file contains scene video played on a PC or Sega Saturn. Most players cannot open uncommon DUK files. You need to update the program opening DUK files. Scan DUK files with antivirus software like Norton.
b) You need to update the application opening .DUK files. Scan the .DUK file for viruses with Norton or similar. A DUK file contains a video scene played on a PC or Sega Saturn. As DUK files are uncommon, most players cannot open them.
c) Application updating is needed by you for .DUK files opening. Virus scanning with Norton should be done on the .DUK file by you. Video scene played on PC on Sega Saturn is contained in a DUK file. Players most cannot DUK files open as uncommon are they.
d) A DUK file contains a video scene played within a PC or Sega Saturn video game. DUK files are quite uncommon, so most popular media players cannot play them. You need to update the application that you normally use to open .DUK files. You need to check the .DUK file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.).
e) A DUK file contains a video scene. Most players cannot open uncommon DUK files. You update the program opening DUK files. Scan DUK files for viruses.
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