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Bug with cbfsconnect2017.sys still disables WSL and Bypass IO

  • October 20, 2026
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Reopen this issue, because this is still happening now and hasn’t been solved.
https://support.box.com/hc/en-us/community/posts/ [removed by moderator] -BOX-Drive-installs-cbfsconnect2017-sys-which-disables-support-for-Microsoft-s-Bypass-IO-directstorage

Now, there are two NetworkProvider filters, cbfs20 and cbfsconnect2017. As I detail at the bottom, setting IoBlockLegacyFsFilters to 1 does not fix the problem any longer. You can delete cbfsconnect2017 entirely as I outline, and both Box and other filesystems work at the same time, but Box persistently re-adds it to the registry, so it is only a quick fix.

If there is a way to permanently remove the older legacy one, it doesn’t appear to serve a purpose.