Calculator widget on notification panel

Hi everyone,


I'd like to know if anyone found this problem after the upgrade to macOS High Sierra.

The calculator widget on notification panel presents a bug: presents by default the number 475 (not zero).

Scenario 1: (re)start the computer, go to the notification panel and the calculator presents the number 475.

Scenario 2: Press "ac" and the calculator goes to 'zero'. Good. I can make calculations... everything fine. But: a) if I left the notification panel and come back in a short time (5 seconds), the calculator presents the number from the last action; b) but if I come back later (for example one minute), the calculator presents the number 475 (again).


Anyone have a similar bug?

MacBook Pro with Retina display, macOS High Sierra (10.13), null

Posted on Sep 28, 2017 7:08 PM

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Question marked as Top-ranking reply

Posted on Oct 12, 2017 5:46 PM

Go to folder:

~/Library/Containers/com.apple.ncplugin.calculator/Data/Library/Preferences

and delete the file com.apple.ncplugin.calculator.plist

(or make a backup of it and then delete it)


This file is not present in a new installation of macOS High Sierra or in the user library of a new user account. If you open it (for example with Xcode) you'll see that it contains the stuck number.


After that your calculator widget should function normally again.

126 replies

Jan 6, 2018 11:55 PM in response to rawsaxy

Just received a reply from the developer of the PEMDAS calculator widget. The newest version (3.1) "white calculator" requires you to restart the computer after installation to fix an issue with macOS causing the calculator to look distorted or missing graphical sections. After restarting my computer, v3.1 works perfect. If any of you who have posted your concerns/complaints with how after upgrading to High Sierra the calculator in Notifications resets to zero (which I previously stated in this discussion is how Apple developers programmed it to function now), or it repopulates with the total you had before upgrading, I encourage you to give this widget a try. Just follow my instructions above on how to set it up.


If what we want is having a visible calculator that retains the last total and even has the benefit to be moved around the screen as an overlay, then based on my experience, PEMDAS is the solution for me. I am not satisfied with the results deleting the .plist/.config file give since all it does it reset the total to zero the moment you go to another window, screen, open/close the Notification sidebar, etc.


In God's Harmony

Jan 22, 2018 10:53 AM in response to rawsaxy

Perhaps if the majority of the users who post their complaints across this forum would also consider investing the time (and I understand it takes a lot of it!) to call Apple Support and voice their issues and complaints, their would be a greater possibility to have things either fixed or work as they used to. The advice almost all give, including Apple Support is to use the Feedback source. From my experience, trusting that the number of users who state they submitted feedback is accurate based on comments, I haven't really noticed that Feedback resolves much of what we complain about. Some issues date back years with numerous feedback to include, change, or re-instate function(s) with no changes ever being made. I've experienced somewhat better results from confirmed phone calls of users phoning in complaints. In the end, as with the majority of companies, whatever changes are made are usually based on internal decisions due to corporate vision.


In God's Harmony

Jan 22, 2018 4:44 PM in response to John Laury

John Laury wrote:


So, again, quite picky, and most people don't need such a hard level of persistence for calculator results. If you need such a level of persistence, write you own app, it's free, and it's not too hard to do.

I'm very familiar with how Macs work. Again, making excuses for what can only be seen as a bug and forcing users to use a workaround doesn't seem "picky". Yes, "most people" don't, some however prefer the old behavior.


Personally I just use PCalc, which works.

Jun 7, 2018 12:13 AM in response to JDW1

I agree. Apple needs to be shot in the foot, for failing to provide the simplest and most basic functions of a computer... to calculate a few numbers! Talk about not seeing the trees through the forest! Geeze! Even with the appex file, the fix is NOT in! It worked for a while, but then the keyboard suddenly fails to input numbers, at which point you have to launch the Activity app and kill the whole notification process to reset it.


I just gave up on the Notifications panel and installed a 3rd party calculator. Shame on you Apple! Wake up and fix your OSX! We bought your China-Made Marvel at $3,500+, and you can't even give us a simple working calculator! Idiots!

Oct 29, 2018 8:17 PM in response to luisfalcon

Thankfully, all contributors to this thread, myself included, received an email notification of your original, unedited post that contained that beautiful link. I downloaded that version of the Calculator and tried it and found it completely solved the problem! Now if Apple would just fix the core problem so we didn't need to download any links, that, my friends, would be the final and best solution!

Oct 7, 2017 12:07 PM in response to VikingOSX

In that case, what you doing here? Losing time with foolish people that just want things working? Losing time with jokes? The way that is best for my productivity is a judgment that you can't do!

So, if you are so busy in your 'world', don't lose time with us!

In my case, I didn't concentrating all my energy on a recalcitrant solution! This is a post just to check if it's a transversal bug... Only that! The only way found to notify the problem (if Apple cares...). Or there is any official way to report a macOS bug?

Jan 4, 2018 2:18 PM in response to mons.fractus

Thanks - fixed the problem for me and the calculator works fine now. Didn't bother to back up the file as the only other files in the preferences directory were all marked 'security' so the calculator plist was the only notifications widget with a plist in this directory. This gave me confidence that deletion wouldn't have any lasting effect. Thanks again mons.fractus. Nice one.

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Calculator widget on notification panel

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