Can not enable Safari extensions

AdonisRC

User level:

Level 1

(4 points)

Apr 2, 2020 3:49 AM in response to nikolay51

 I might have found one — can you go to Safari > Preferences > Extensions, then navigate to a different pane (e.g., Advanced), and then back to Extensions?

It worked for me surprisingly.

IT WORKS !

Safe boot didn't fix it for me.

What help was to uninstall another Extension (Save to Pocket). After that I could enable the other extension. Reinstalled "Save to Pocket" and problem still gone.

Did you try moving the Preferences window away from the dock? That's what finally did it for me after trying everything you did and failing as well.

Try disable 'disable plugins to save power'(May not be accurate that I'm not using English) on Safari-

Preferences-Advanced. It worked for me.

It looks like I found the problem in my case.

I have TeamViewer running on the Mac which shows the problem. I realised, that the problem occurs after I logged in remotely. When being physically back to the problem machine, a reboot usually fixes it, but one time only a power off fixed it.

Probably TeamViewer is the culprit.

I was able to use the Develop menu to get this to work, thanks to tip above. I had to click the disable extension and then close my browser. Restart browser, click off the disable extension, then click on the checkboxes in preferences.. It worked!!

Yes, move the Preferences window away from the dock. To the other side of the screen or the middle of the screen. For me there seems to be a "zone" where the problem is in relation to the screen/dock.

 I might have found one — can you go to Safari > Preferences > Extensions, then navigate to a different pane (e.g., Advanced), and then back to Extensions?

It worked for me surprisingly.

None of the solutions worked for me until today when I moved the Preferences window away from the dock. All of a sudden I could select the checkboxes again!

In my iMac 17-inch (late 2013, BTO powered) with macOS Catalina 10.15.3 I have solved the issue related to Safari Extensions which sometimes doesn't allow to check or uncheck the box that enables the various Extensions. (Note: I have 1Password, Downie 4, TranslateMe, WebSnapper Pro and others Extensions.)

With Safari and Safari Technology Preview closed, I had the idea of ​​copying, simply, this two files:

My_Home/Library/Containers/com.apple.Safari.DiagnosticExtension

and

My_Home/Library/Containers/com.apple.SafariTechnologyPreview.CacheDeleteExtension

in Folder --> /My_Home/Library/Application Scripts/

(Note: this two original files in /My_Home/Library/Application Scripts/ was empty (0 byte))

So! Immediately after restarting Safari, I was able to check or uncheck the box again to disable or enable th eExtensions as many times as I want and now all Extensions are working properly on my 27-inch iMac (late 2013).

However, this fix doesn't works on my MacBook Pro!... and it's a mystery...

Now, I add here some suggestion Off Topic but I hope the Forum's Administrator will not cancel or cut my post which it's not an accusation or an insult! This my kind and strong suggestion, instead, could serve Apple to understand finally a GUI problem and a serious Privacy issue which, due to unforeseeable or fortuitous circumstances, could cause serious damage to Apple in the future, both in terms of reputation and economic. ;-)

So! Recently, some Apple Developers have been reveal some beginners flaws! For example: from several major releases of the macOS I sent various Feedback to Apple about some horrendous things of GUI, for which Steve Jobs - who respected the Users - perhaps would have fired the Programmers of Mail.app Preferences Panel and perhaps the Programmers of Safari's Extensions Panel...

The Mail.app Preferences, in fact, they ugly and troublesome especially for those who, like me, manage many own and of the family Mail Accounts and prefer to use the names of each e-mail address as a customized name; name which, however, not fit in the box of the Mail Accounts because it's impossible to resize this white box or the Mail.app Preferences panel.

I add also a comment about the serious violation of the Privacy, by Apple, caused by the fact that at the LogIn or at the Lookscreen, upon awakening from the Stop, the background Wallpaper used by every Mac User appears!

Apart from the risk of being able to profile the tastes of the User, in some cases or for someone's naivety, this could cause serious damage, e.g.: discovering sexual or political preferences, showing the image of a naked child who is perhaps his own son, revealing a betrayal to a consort, etc... :-O

The LogIn and Lookscreen window, in fact, should be customizable or protect as in any device in the World (iPhone, iPad, Android, Windows, Linux...). But Apple pretends not to understand and an Apple Developer even replied a my Feedback asserting that this doesn't an issue but "is by design" :-O Tim Cook, though, goes around the world claiming that for Apple the respect for Privacy is a top priority…

macOS 10.15 Catalina  will install app extensions from App Store.

How to install Safari Extensions?  https://support.apple.com/en-us/HT203051

This just started for me a couple days ago. Can uncheck them, but cannot enable anything. Doesn't matter the extension, they will not enable. Every extension is downloaded from the Mac App Store. I have tried every thing listed.

• I have selected other tabs in preferences and back to extensions, still won't enable.
• I have uninstalled all extensions, and reinstalled one by one.
• I have tried selecting and deselecting Disable Extensions in the Develop Menu
• I have tried selecting Disable Extensions in the Develop Menu, quitting Safari and relaunching. The Disable Extensions is no longer selected when I relaunch Safari. Regardless, it didn't work.
• I have tried rebooting into safe mode.
• I have installed macOS Catalina again from scratch.

I can't think of anything else to try. Guess it's time to switch browsers until Apple fixes this.

Did exactly that and… it works !