Apple’s latest update for macOS High Sierra hasn’t gone well. The update included a bug that made it pretty easy for anyone to gain admin rights to your Mac — an obvious privacy concern. Apple rolled out a patch for the issue, but it seems that’s not without its problems either, as some users are now unable to authenticate or connect to file shares on their Macs.



Briefly outlined in a document posted to Apple’s Support pages, the issue appears to impact only a portion of macOS High Sierra users who downloaded and installed today’s security update. The number of people affected by the file sharing bug is unknown, but it seems a system library error is to blame for failed authentications. Impacted users took to social media to report the problem, which is quickly solved with a minor Terminal procedure.

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Source: [H]ardOCP – Apple Explains How to Fix File Sharing after Security Update Breaks Feature