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On this page, you will find more information about the most common causes and most relevant solutions for the Box error 'Unable to Open File'. Do you need help straight away? Visit our support page.
The Box, Inc. documentation indicates that error code 'Unable to Open File' is caused by the following problem: "Online Only files cannot be opened while you are offline.".
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Return online and retry the file download.
Do you still have problems with this error? Try one of the quick fixes below or leave a comment.
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