Apple Shares Fix for File Sharing Issues Following macOS High Sierra Security Update

Apple this afternoon published a new support document that walks users through repairing their file sharing options on their Macs after installing the 2017-001 Security Update for macOS High Sierra 10.13.1, which was released this morning.


Shortly after the security fix was released and users began installing it, file sharing complaints began surfacing on the MacRumors forums. Affected users saw file sharing fail to authenticate across multiple Macs. From MacRumors reader joedec:

Immediately after installing this patch, file sharing fails to authenticate. I see this on multiple Macs. Hoping for some collaboration. [...]

With the Finder open a file share to any Mac with the security update installed. Status shows "not connected", when you try to "connect as" your username and password fail.

According to the document, macOS High Sierra users who cannot access file sharing after installing the security update will need to complete the following steps:

1. Open the Terminal app, which is in the Utilities folder of your Applications folder.
2. Type sudo /usr/libexec/configureLocalKDC and press Return.
3. Enter your administrator password and press Return.
4. Quit the Terminal app.

MacRumors readers who were having file sharing problems have tested Apple's fix and have confirmed that it does indeed work to solve the problem.

Apple issued this morning's security update to address a major vulnerability that enabled the root superuser on a Mac with a blank password and no security check.

The problem has been successfully fixed on machines running macOS High Sierra 10.13.1, the current release version of macOS High Sierra, but Apple has not yet addressed the vulnerability in macOS High Sierra 10.13.2, available to both developers and public beta testers.

Update: Apple appears to have released a revised version of the security update, which is valid for systems running both macOS 10.13.0 and 10.13.1. The revised version may also address the issue in the original version that resulted in file sharing problems.

Related Forum: macOS High Sierra

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Top Rated Comments

vicviper789 Avatar
86 months ago
Apple needs to fire the intern in charge of OS X
Score: 65 Votes (Like | Disagree)
Diving Capers Avatar
86 months ago
Why can’t it be like the good old days when “it just works” was real?



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dogslobber Avatar
86 months ago
Time for Cook to resign. His tenure has been a disaster.
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NaOH Avatar
86 months ago
99 little bugs in the code
99 little bugs in the code
Take one down, patch it around
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86 months ago
Apple gives zero craps about the Mac.
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86 months ago
Time for Cook to resign. His tenure has been a disaster.
I can’t disagree more.
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