Why is app designer not opening?
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I am unable to open app designer. I am running Mac OS Sierra with MATLAB 2016b. When I click on opening a new app designer script a MATLAB window icon appears in my dock, but a window does not appear.
17 Comments
Accepted Answer
StephenJ
on 16 Jan 2017
I was having the exact same problem (2016b, OS Sierra), which appeared when I had entered full-screen mode while connected to projector. In MATLAB click on new app designer script or open existing mlapp file, icon should appear in the dock. Then Menu->Enter full screen, app designer will show up, if not, swipe on your trackpad until designer window pops out, then reset it by closing MATLAB Window from the top menu. Worked in my case. Btw I tried changing the matlabpref.mat as suggested by Sean, it did not work itself, but there still might be a correlation with my solution as I didn't change the setting back.
6 Comments
Monika Jaskolka
on 10 Mar 2021
Edited: Monika Jaskolka
on 10 Mar 2021
I had this issue on Windows 10. This answer worked for me.
I hovered over the problematic window in the dock, right-clicked on it, and selected Maximize.
More Answers (4)
Ron Fredericks
on 21 Mar 2022
Monika Jaskolka's comment within the question worked for me:
Windows 10:
- Hover over the MATLAB icon in the task bar - wait for windows to show, including the missing app designer window,
- Right-click on app designer window, and select Maximize.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/934899/image.png)
5 Comments
Patrick
on 28 Jul 2022
I found that deleted the MATLAB preferences folder resets everything and it works properly now.
Xulai Xu
on 26 Nov 2016
Someone please answer this I encountered the same problem. Tried everything, nothing worked
0 Comments
Sean de Wolski
on 28 Nov 2016
cd(prefdir)
load('matlabprefs.mat')
What are the settings in
Preferences.appdesigner
They should look something like this
ans =
struct with fields:
ShowIntroDialog: 0
Position: [1 1 112 0]
Maximized: 1
ShowCodeViewTips: 0
ShowCompatibilityDialog: 0
If not: Try, changing Maximized to true or Position to something like mine above, save back to matlabprefs.mat and restart MATLAB.
8 Comments
Eric Delgado
on 6 Aug 2021
Different ways to handle this issue:
- Update Windows 10 version
- Update graphics driver
Alexander
on 26 Mar 2023
>> cd(prefdir)
load('matlabprefs.mat')
>> Preferences.appdesigner
Unrecognized field name "appdesigner"
I have the same issue of blank screen on startup
Shehzad Ahmed
on 3 Jun 2022
hello,
my appdesigner is not working anymore. I need help for my projekt.
I keep getting this error-code.![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1020555/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1020555/image.png)
please Help.
Ich brauche Hilfe beim Öfnnen des AppDesigners.
dieser Fehler wird mir immer angezeigt.
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