I don't believe there is anything such as non-copy file format.
To view what format your files are, simply right click on your file, then select property, and under the tab "general" you will see the file extension.
Things that can prevent you from copying files:
-you are not the owner of the file for your system. To change this: once again click right and select property but this time go under security tab and allow yourself to be the owner and make any modification to the file
-the extension is not recognized by your computer, you sometimes need extra program to run on your PC so the specific extension is recognized. if it's not recognized... Well how can you PC copy it
Hope this help
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