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firefox browser corrupted my computer files.

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When i go into file explorer on computer running windows 11 all files were opening in firefox. Even files i scanned into my computer from my printer. I tried to change default to notepad. When i did, all files including images changed to unreadable computer script. Any fix?

When i go into file explorer on computer running windows 11 all files were opening in firefox. Even files i scanned into my computer from my printer. I tried to change default to notepad. When i did, all files including images changed to unreadable computer script. Any fix?

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Could you turn on viewing of file extensions. The following article has the steps:

https://support.microsoft.com/en-us/windows/common-file-name-extensions-in-windows-da4a4430-8e76-89c5-59f7-1cdbbc75cb01

The reason I suggest this is to see what their extensions are. Maybe .pdf or some other type of file got associated with Firefox. That's easy to change in Windows settings, but first you need to know what type of files they are.