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Safari Technology Preview — Extensions

I am unable to activate any of my extensions listed in the Preferences window of my Safari Technology Preview (Release 97). The check box in front of each does not change when I click on it. The same list of extensions works fine in my version of Safari (v.13.0.4)


Any thoughts?

iMac 27", 10.15

Posted on Jan 5, 2020 1:48 PM

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Question marked as Top-ranking reply

Posted on Jan 5, 2020 2:42 PM

I don't have that problem.




Startup in Safe Mode.

Click the "Restart" button at bottom center.

Try again.


Use safe mode to isolate issues with your Mac - Apple Support


4 replies

Jan 5, 2020 7:16 PM in response to dominic23

Thanks for the tip.

Booting up in Safe Mode allowed me to re-open the extensions I wanted. When I rebooted and went back into Safari Developer Preview those extensions were available but in references I could not turn them off or open other extensions.


I wonder does this mean to make any changes in future I will have to do it in Safe Mode only?

Safari Technology Preview — Extensions

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