I don't know what happened. I just restarted my Macbook and opened up Safari to find all my extensions gone. I went to the extensions page to download again but am unable to do so. I go to the Develop menu to find "disable extensions" check marked. I click on it but it's unresponsive. I'm unable to remove the check mark from "disable extensions". Any ideas?
MacBook Air (11-inch Mid 2012), macOS Sierra (10.12)
Tried everything. Couldn't fix it. I ended up just erasing the hard drive and doing a reinstall of High Sierra. All my files are either on iCloud or my external so doing a reinstall was relatively seamless.
The extensions gallery in preferences is empty. Says "Extensions can be enabled in the Develop menu". I go to the Develop menu where "Disable extensions" has a check mark next to it. I click on it to remove the check mark but it does nothing
Did you tried to follow the articles , also in system library - click on finder > Go > computer > Macintosh Hd > Library > Extensions - try to delete the items ( but before doing consult apple support senior advisors ) .Also in user library macOS Sierra: Library folder
The contents of folders caches , cookies , saved application state are deleted into the trash , restart the Mac and empty the trash .
Create a new user account and test see this article How to test an issue in another user account on your Mac - Apple Support
The only solution I have seen posted that solves this problem is to boot into the Recovery Partition and reinstall the OS.
See this article Install and manage Safari extensions on your Mac - Apple Support
And old thread Can't Add Safari Extensions
Unable To Download Extensions. Help
