UserAgent: Mozilla/5.0 (X11; CrOS i686 8172.28.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.42 Safari/537.36

Steps to reproduce the problem:
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What is the expected behavior?
My android used to transfer files with my Samsung chrome book

What went wrong?
My android used to transfer files with my Samsung chrome book, but it has now stopped.

Did this work before? Yes for the last 2 weeks

Chrome version: 51.0.2704.42  Channel: n/a
OS Version: 8172.28.0
Flash Version: Shockwave Flash 22.0 r0