Why do I receive "Products Already Installed" when installing MATLAB or additional toolboxes?

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Why do I receive the following warning when re-installing MATLAB or additional toolboxes?
Products Already installed:
All selected products are already installed.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 20 Dec 2022
Edited: MathWorks Support Team on 16 May 2022
As of R2021b, the MathWorks Installer will provide a warning message if you attempt to reinstall products that are already installed.  The MathWorks Installer will not automatically uninstall and reinstall software. Please see below for instructions on:
  • Uninstalling MATLAB
  • Reinstalling a particular toolbox
Uninstalling MATLAB
To reinstall MATLAB, you must first uninstall MATLAB, then you will be able to proceed in the installation.  For instructions on how to uninstall MATLAB on each supported Operating System, please refer to the following links:
Reinstalling a particular toolbox, other than MATLAB
If you would like to reinstall a particular toolbox, you must first uninstall the toolbox:
Once uninstalled, you may proceed with the installation.
  12 Comments
Image Analyst
Image Analyst on 24 Dec 2022
Edited: Image Analyst on 24 Dec 2022
@Jimmy Willie Woulo, if your downloaded MATLAB installer is a .ZIP file, and it opens it in File Explorer or a program like WinZip or 7-Zip, I would extract the files from the zip archive into a regular, normal folder. Do not attempt to run the setup.exe program from within the zip archive! Run the setup.exe program only after it has been extracted to a normal folder.

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More Answers (67)

ALDAIR CERVANTES
ALDAIR CERVANTES on 26 Aug 2021
Porque me aparece esto almomento de instalar la versión mas reciente de matlab?
  4 Comments
盛书 许
盛书 许 on 9 Aug 2022
Reinstall the computer system, or format the disk installed with MATLAB and then go to the official website for installation

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chi nguyen dinh
chi nguyen dinh on 11 Oct 2021
I cannot open Matlab 2021b.
  3 Comments

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jorge ivan  gallegos rosales
por que me manda aqui y no abre matlab?

Amrita Pal
Amrita Pal on 20 Oct 2021
i am installing on a different account

Emre Yildiz
Emre Yildiz on 28 Oct 2021
Hallo, after the complete installation of MATLAB my macOS device won't open the programm ?
  1 Comment
Walter Roberson
Walter Roberson on 28 Oct 2021
Did you check in System Preferences -> Security & Privacy pane, "General" tab, to see whether you need to grant permission to run the code?

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Ramamohan Tummala
Ramamohan Tummala on 29 Oct 2021
Edited: Image Analyst on 24 Dec 2022
I did not understand that this package is already installed.
Can I continue with the installation?
  1 Comment
Walter Roberson
Walter Roberson on 29 Oct 2021
Yes, you can continue installation. The installer will install any products that you asked to install that are not already installed.

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Israel Palma Quiroz
Israel Palma Quiroz on 30 Oct 2021
The installation was not achieved, that is the reason why I need to do the installation again

Narci Jimenez Alvarado
Narci Jimenez Alvarado on 1 Nov 2021
me aparece que debo resolver la respuesta

Marco Yeh
Marco Yeh on 4 Nov 2021
I change PC

Paul Hamilton
Paul Hamilton on 7 Nov 2021
Edited: Image Analyst on 24 Dec 2022
How do I access my new R2021b? I seem to have already installed this new version of the software but when I launch the MATLAB application it still goes to the old R2021a and opens that old version instead of the new version.
  1 Comment
Image Analyst
Image Analyst on 24 Dec 2022
You did not uninstall r2021a and you still have the old icon on your desktop or Taskbar. Make sure you're clicking on the correct icon. Installing a new version will not redirect desktop and taskbar icons automatically to the new version so they will still point to the old version. This is because sometimes people want both versions on their system and need to decide which one to launch.
If you don't have an icon for the new version anywhere, then make one on your desktop or taskbar by going to Start (Windows) and finding the new version and right click on it to tell it to make a new shortcut somewhere.
Or find "C:\Program Files\MATLAB\R2022b\bin\matlab.exe" in File Explorer and right click on it and tell it to "Send to -> Desktop (Create shortcut)"

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gopi h
gopi h on 8 Nov 2021
i failed to install the softwate during installation

Vyshnavi Arram
Vyshnavi Arram on 22 Nov 2021
Edited: Image Analyst on 24 Dec 2022
OK, but I want install again to a different folder than the default.
  1 Comment
Walter Roberson
Walter Roberson on 27 Nov 2021
Edited: Image Analyst on 24 Dec 2022
Use your system facilities to uninstall MATLAB, then delete the MATLAB installation directory. Then reinstall MATLAB specifying your desired folder location.

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Jyotin Gokli
Jyotin Gokli on 30 Nov 2021
I have uninstalled MATLAB still it gives me same error

Zoher Chiba
Zoher Chiba on 15 Dec 2021
I had a trial Matlab for 1 month. I have now purchased a home license. I believe I have to uninstall the trial Matlab brfore I install my home licensed Matlab. How do I do that?

Lubos Vargovcik
Lubos Vargovcik on 27 Dec 2021
I requested an extension of the original trial by 30 days
  1 Comment
Walter Roberson
Walter Roberson on 30 Dec 2021
The volunteers who answer questions here do not have access to the license database. You will need to contact Mathworks Sales to request extensions for any trial license.

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karthik sk
karthik sk on 29 Dec 2021
the MATLAP trIial by 3-0 days is expreid so extension to requested to install the MATLAB
  1 Comment
Walter Roberson
Walter Roberson on 30 Dec 2021
The volunteers who answer questions here do not have access to the license database. You will need to contact Mathworks Sales to request extensions for any trial license.

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Yitayal Ewnetu Chanie
Yitayal Ewnetu Chanie on 2 Jan 2022
I can't integrate android studio to matlab simulink.

Muhammad Ashhad  Khan
Muhammad Ashhad Khan on 7 Jan 2022
Edited: Image Analyst on 24 Dec 2022
Actually I had changed the user name while I was installing MATLAB and now my local pc's account name is changed. Now I want to reinstall it.
  1 Comment
Image Analyst
Image Analyst on 24 Dec 2022
That was not a good idea.
  1. If you have an email account at MATHWORKS.COM, you should just be able to deactivate your installation (on the web site or from the MATLAB group in your start menu) then uninstall. Then delete the MATLAB folder under C:\Program Files\MATLAB. Then reinstall.
  2. If you have an activation key, you'll have to ask for a new one.

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Margarita Toapanta
Margarita Toapanta on 14 Jan 2022
puedo volver a instalar matlab?

Rimantas Barauskas
Rimantas Barauskas on 18 Jan 2022
I've got a message that the license expires in 12 days
  1 Comment
Walter Roberson
Walter Roberson on 19 Jan 2022
If you purchased the license yourself then you will need to purchase a renewal, or else the license will stop working.
If you did not purchase the license yourself, then contact whoever purchased the license for you.

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Emiliana Moreno
Emiliana Moreno on 25 Jan 2022
por que aparece instalado y no esta instalado

Ebram Fahim
Ebram Fahim on 28 Jan 2022
Edited: Ebram Fahim on 28 Jan 2022
I can not open my matlap

Devendra Singh
Devendra Singh on 2 Feb 2022
Edited: Image Analyst on 24 Dec 2022
I want to update or install my trial software.
  1 Comment
Walter Roberson
Walter Roberson on 10 Apr 2022
If somehow you are moving to a new trial version of MATLAB, then use the uninstaller to remove the old trial version.
If you obtained a new (extended) trial license, then in the command window
Help -> Licensing -> Update current licenses

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Rafael Alberto Pech Uc
Rafael Alberto Pech Uc on 9 Feb 2022
no puedo abrilo ayuda

ntabala benoit
ntabala benoit on 27 Feb 2022
i lost my computer with the application installed on the machine, now am failling to activate the app into the other computer

Fatimata Guiro
Fatimata Guiro on 12 Mar 2022
i cant upon matlab 2021b

Abelardo Bethencourt Fernández
porque uno de los productos previamente intalado no podia se soportado en mi equipo

ahmed almutairi
ahmed almutairi on 30 Mar 2022
because matlab is already installed in your PC
  1 Comment
Carlos Alberto Huayllasco Montalva
Edited: Image Analyst on 24 Dec 2022
Yes, but it does not function properly. Possibly because I installed it while not in administrative mode.

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ALESSIA ZUCCARO
ALESSIA ZUCCARO on 31 Mar 2022
non funziona.

Karl Mueller
Karl Mueller on 11 Apr 2022
Hello,
My employer has purchased the Deep Learning Toolbox for me and added it to my license. I have R2021b. I went through the installation process but when I try and access deep learning apps they are not there, and running nnstart informs me that I need the Deep Learning Toolbox.
I redownload the installer and run it and receive the message that products are already installed!
What do?
  2 Comments

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Deng Zhixiang
Deng Zhixiang on 11 Apr 2022
有問題 不能順利開啟,刪除已安裝過的,重新安裝。

Jessica Trawick
Jessica Trawick on 14 Apr 2022
Edited: Jessica Trawick on 14 Apr 2022
I am trying to download the newest version of matlab as I got a warning this morning when I went to open my Simulink model that I created on this same computer yesterday. I attached the warning window. But now I can't download the update because it shows me the same error as the OP. Do I have to uninstall all of Matlab and toolboxes before I update? Seems like a lot, just to get an update.

山松 李
山松 李 on 7 May 2022
不知道

Viridiana
Viridiana on 9 Jun 2022
Para volver a instalar los productos de matlab

예구 전
예구 전 on 26 Jun 2022
라이센스가 잘못되었다고 실행이 안되기 때문입니다.

Sesto Pischedda
Sesto Pischedda on 1 Jul 2022
Impossibile accedere a matlab, ho provato a reistallare e si blocca qui:
All selected products are already installed, to reinstall products, see this Matlab Answer.
E ora dopo aver letto tutte le richieste che faccio ?

jiantao
jiantao on 1 Aug 2022
user name ist falsch ,kann ich nicht offen.

David Bailey
David Bailey on 22 Aug 2022
Matlab
Controls toolbox
symbolic toolbox

nafissa nouioua
nafissa nouioua on 25 Aug 2022
i want to install another matlab

Bem
Bem on 3 Sep 2022
I want to reinstall matlab

Tammy
Tammy on 22 Sep 2022
Edited: Image Analyst on 24 Dec 2022
The username is wrong. I want to install on an account on my local computer that is different than I got an activation key for.
  1 Comment
Walter Roberson
Walter Roberson on 25 Sep 2022
If you look in your MATLAB installation directory, you will find a deactivation executable. Run that, and then run the activation executable you find in the same directory. If it asks for your username be sure to give your computer username, not any email address. Even if you log in to a Windows machine using a Microsoft Live account, you need to use the internal computer username; see https://www.mathworks.com/matlabcentral/answers/445335-computer-login-name-for-license-center#answer_361871

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MD IQBAL HOSSAIN
MD IQBAL HOSSAIN on 25 Sep 2022
I need to Renew
  1 Comment
Walter Roberson
Walter Roberson on 25 Sep 2022
You do not need to re-install or de-install MATLAB in order to renew your license.
Once Mathwork has accepted payment for your license renewal, go to the command window Help->Licensing->Update Current Licenses... and it will load in the revised license.

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Thomas H. Kerr III
Thomas H. Kerr III on 30 Sep 2022
Edited: Walter Roberson on 30 Sep 2022
I don't know? You should be telling me the answer.
Usually, my renewal is near the end of the year in December.
Since my renewal date is always near the end of the year in December, I should not need to renew now.
I want to finish my current installation please.
  1 Comment
Walter Roberson
Walter Roberson on 30 Sep 2022
You do not need to re-install or de-install MATLAB in order to renew your license.
Once Mathwork has accepted payment for your license renewal, go to the command window Help->Licensing->Update Current Licenses... and it will load in the revised license.

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chris
chris on 2 Oct 2022
i really dont know why the matlab software is not working

vemula
vemula on 3 Nov 2022
am not installed properly

Alexis Camilo
Alexis Camilo on 20 Nov 2022
Buenas tardes
Eh reinstalado el programa debido a que un código no me aceptaba mientras que en otros dispositivos sí, en busca de tratar de solucionar esto, tomé la desicion de instalar todos

Dan Green
Dan Green on 25 Nov 2022
Edited: Image Analyst on 24 Dec 2022
MATLAB ceased to function properly after a cleanup using AVAST anti-virus.
AVAST wiped, blocked, or quarantined a crucial DLL that MATLAB says is now missing.

豪栋
豪栋 on 4 Dec 2022
忘下载一些东西但不会操作只能从新下载

Federico Hernandez Alvarez
The systems have some problems, and I don’t know where is it

VENKATESH THOORPATI
VENKATESH THOORPATI on 24 Dec 2022
please reinstall all the products

solomon
solomon on 9 Jan 2023 at 10:33
why reinstalled the matlab app

arepalli
arepalli on 12 Jan 2023 at 7:38
re installed my all produsts please iam practiceing
  1 Comment
Walter Roberson
Walter Roberson on 24 Jan 2023 at 20:00
I suggest you use the uninstaller and then re-install. (But before you do that, make sure you know how to find your license number or activation key in order to be able to reinstall.)

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diro
diro on 17 Jan 2023 at 10:27
i need addition matlap
  1 Comment
Walter Roberson
Walter Roberson on 21 Jan 2023 at 19:03
Could you confirm that you have one of these two cases:
  1. something went wrong in installing MATLAB originally, and now you have a MATLAB that does not run but the installer will not reinstall it because it says it is already installed; Or
  2. You have a running MATLAB that does not have some toolbox installed, and when you go to install the toolbox, it tells you that the toolbox is already installed ?

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jesus omar
jesus omar on 17 Jan 2023 at 21:19
Me apareció una campana con un punto rojo, al presionar me indica que hay una mejora o algo parecido, la presioné, el software hasta ahora aparece congelado

Jayanth
Jayanth on 18 Jan 2023 at 16:25
My laptop is not working and Matlab is loading very slowly. So I am Installing the MAT LAB on this device.