Stuck on "Preparing to install Add-On"

Hello all,

I am attempting to install the Symbolic Maths Toolbox, for my version of MATLAB R2025a (2025b crashes on launch on my laptop). Whenever I click install, it permenantly gets stuck on displaying this page:

The cross button does nothing to close this.

Thank you in advance for your help.

[Broy]

Hi @Vladimir,

I understand that you are attempting to install the Symbolic Maths Toolbox in MATLAB R2025a using the 'Add-on Explorer' and it permenantly gets stuck.

You can follow the below matlab answer post for a workaround:

https://www.mathworks.com/matlabcentral/answers/101885-how-do-i-install-additional-toolboxes-into-an-existing-installation-of-matlab

Answer 1

[David]

run matlab as admin

[Alexander]

this worked for me