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Scenario

You launch ExtFS for Mac from System Preferences, and receive this error: The system extension “/Library/Extensions/ufsd_ExtFS.kext” was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update.

Solution 1

Reinstall the product.

Solution 2

Change ownership of product components.

Open Finder -> Applications -> Utilities
Double-click the Console item
In the left part of the Console window, select system.log in the Files section
Make the error message appear again. See what appears in system.log:

Can’t load /Library/Extensions/ufsd_ExtFS.kext – authentication problems.

Please enter the following command in Terminal:

sudo chown -R root:wheel /Library/Extensions/ufsd_ExtFS.kext

If the solutions didn’t help, Please enter the following commands in Terminal:

kextutil /Library/Extensions/ufsd_ExtFS.kext
ls /Library/LaunchDaemons
ls /Library/LaunchAgents

Send the output to Support Team. How to submit support request

ExtFS for Mac
Tags: error, ExtFS for Mac

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ufsd_ExtFS.kext Error When Trying To Launch ExtFS For Mac Preference Pane

Scenario

Solution 1

Solution 2