How to Fix File Sharing Issue in macOS High Sierra After Installing Root Bug Security Update

Faced with file sharing problem right after installing the Root Bug Security update on your Mac running macOS High Sierra 10.13.1? Try out this workaround to troubleshoot the issue.

After the installation of root bug Security Update for macOS High Sierra 10.13.1, file sharing capabilities, connections, and file sharing authentications are not working for some Mac users. Fortunately, Apple is aware of the issue and has provided a temporary solution to fix the broken file-sharing problem on Mac.

For those unfamiliar, developer Lem Ergin discovered a bug in macOS High Sierra 10.13.1 that allows anyone to log into an admin account using the username “root” with no password. If you have also encountered the file-sharing problem on your Mac, try out this workaround to troubleshoot the issue.

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How to Fix File Sharing Issue in macOS High Sierra

How Fix File Sharing in macOS High Sierra After Installing Security Update 2017-001

Step #1. Launch Terminal on your Mac (Simply search Terminal from Spotlight search)

Launch Terminal Using Spotlight on Mac

Step #2. Now, you need to enter the following command syntax:

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sudo /usr/libexec/configureLocalKDC

Type configureLocalKDC in Terminal on Mac

Step #3. Now, hit the Return key and enter your administrator password to authenticate with sudo.

Enter Admin Password in Terminal on MacFix File Sharing Issue in macOS High Sierra

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Step #4. Next, quit Terminal.

That’s done! Hopefully, the file-sharing problem is resolved now.

Wrap up:

This workaround has worked for many users, and I hope it clicks for you as well. Expectedly, Apple will soon release a permanent solution to this problem.

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Jignesh Padhiyar
Jignesh Padhiyar is the founder of who has a keen eye for news, rumors and all the unusual stuff that happens around iPhone and iPad.


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