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How can we block file:/// protocol to prevent any access to local disk drive from the firefox browser?

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When type in address bar c:\ I can have access my local disk and I would like deny this type of access.

When type in address bar c:\ I can have access my local disk and I would like deny this type of access.

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Maybe run Firefox in a restricted sandbox environment that doesn't allow access to local files. You would have to allow read access to font folders and some other important folders.

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Unfortunately, there is not yet an Enterprise policy for this.

Or more specifically, the WebsiteFilter policy doesn't yet handle the file:// protocol. It's on the "to do" list.

See: https://support.mozilla.org/questions/1270774