Error opening NEF files now - after Windows 10 update?

Started 3 weeks ago | Discussions thread
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juhsstin2 Forum Member • Posts: 58
Error opening NEF files now - after Windows 10 update?

Just today I am trying to open NEF files. my default viewer is Microsoft Photo Viewer. I get the message "Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item."

If I try instead to use Photos app, it opens okay but I would rather use Microsoft Photo Viewer as it renders the images more quickly as I flip through them. I believe there was a Windows 10 update or something recently on my computer, and it just started today. JPEG's are still okay.

Anyone running into this problem? Know of any fixes?

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