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I cant open simulink, just show loading

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I can't open simulink . I get the spinning wheel at my window but nothing happends (I have waited 30+min multiple times). Just 2 days ago everything worked perfect. I installed latest windows updates (R2020a) again but still it didn't work simulink.
  2 Comments
Navdeep Gavkar
Navdeep Gavkar on 15 Aug 2021
Edited: Navdeep Gavkar on 15 Aug 2021
I am facing the same problem.I'm using R2020b.It's just showing 'Starting Simulink'.But nothing happens beyond that. Other MATLAB functions working properly.But only simulink is not opening. Please give Solution to this..
Longfrei Bai
Longfrei Bai on 27 Sep 2021
I have the same problem with R2021b. It happens when I install the R2021b and R2021a in two folders..
Now I have removed R2021a and used R2021b only. I have tried following:
  1. Unistall (also including the appdata) and reinstall
  2. reboot laptop
  3. start via command: simulink
  4. change default printer

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Answers (3)

Remna Radhakrishnan
Remna Radhakrishnan on 29 Nov 2021
I had the similar issue with r2021b. The following steps I did to resolve the issue
  1. Uninstalled r2021b
  2. Re-installed the latest version of r2021b
  3. Deleted C:\Users\%username%\AppData\Roaming\MathWorks\MATLAB\R2021b folder and created a new empty folder with the same name (R2021b) . If required, take the backup of existing R2021b folder as R2021b-backup
  4. Repeat the same steps for the following folder - C:\Users\%username%\AppData\Local\MathWorks\MATLAB\R2021b
  5. Start Matlab
  1 Comment
Thomas Landemaine
Thomas Landemaine on 6 Sep 2022
I think this is what worked for me:
I had tried changing the default printer before (https://www.mathworks.com/matlabcentral/answers/385283-why-does-opening-simulink-for-the-first-time-in-a-matlab-session-take-a-long-time) but it did not help.
After implementing the steps above I was finally able to start simulink in Matlab 2021b [I had just reinstalled, I skipped steps 1. and 2.]

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Navya Seelam
Navya Seelam on 12 May 2020
  4 Comments
Longfrei Bai
Longfrei Bai on 27 Sep 2021
It doesn't work for me, even if I change the default printer..
David Wilson
David Wilson on 8 Oct 2021
Same here.
I have submitted a service request but never recieved a response.

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Scott Herr
Scott Herr on 14 Apr 2022
My similar issue was resolved by turning off virus protection software (setting exception) inside the R2022a folder.

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