MATLAB Answers

32

Why do I get a connection error when installing or activating MATLAB or another MathWorks product?

I get an error that I cannot connect to MathWorks when running the MATLAB installer or the activation client. However, I can access the website. Why can't the activation client connect to the MathWorks?
Application could not connect to MathWorks

38 Answers

Answer by MathWorks Support Team on 6 Dec 2018 at 5:00
Edited by MathWorks Support Team on 6 Dec 2018 at 11:13
 Accepted Answer

Cause:
Computer Security software is preventing the MathWorks Installer from connecting to the MathWorks servers. This is known as a connection issue due one or more of the following:
  • Antivirus Software
  • Proxy
  • Firewall
Solution:
Antivirus Software
To temporarily disable your Antivirus on Windows:
  1. Locate the Antivirus protection program icon on the Windows system tray.
  2. Right-click the icon and select Disable, Stop, etc. to temporarily disable the program. In some cases, you may need to open the program and disable it using the program's menus.
To temporarily disable your Antivirus on a Mac:
  1. Locate the Antivirus icon found on your Mac menu bar.
  2. Click Shut down or disable temporarily until installation and activation have completed.
To temporarily disable your Antivirus on a Linux:
  1. Locate the Antivirus protection program icon on the Linux system tray.
  2. Click Shut down or disable temporarily until installation and activation have completed.
Proxy
The MATLAB installer and activation client will try to automatically inherit your computer's proxy settings on Windows. If this process fails, you may need to manually enter your settings using the "connection settings" button on the first screen of the installer or activation client. On Mac and Linux, you will always need to enter these settings manually.
To disable your Proxy in Internet Explorer:
  1. Click the Tools button and then select Internet Options.
  2. Click the Connections tab and then select LAN settings.
  3. Uncheck the check box for Use a proxy server for your LAN.
To disable your Proxy in Chrome:
  1. Open the Customize and Control Google Chrome menu by clicking on the three-line icon at the top right of Google Chrome, select Settings on the left, find Network and finally select Change proxy settings.
  2. Select the LAN Settings button.
  3. Deselect the checkbox for Use a proxy server for your LAN.
To disable your Proxy in Safari:
  1. Go to Menu and click on Preferences from the drop-down menu.
  2. Select the Advanced tab and then click on the Change Settings button.
  3. Deselect the checkbox for Use a proxy server for your LAN.
To disable your Proxy in Firefox:
  1. Click the Tools button and select Options.
  2. Go to the Advanced panel and select the Network tab.
  3. Click on Settings in the Connection Section and select No Proxy.
You will need to contact your IT Help Desk to troubleshoot this issue if you don't know your proxy settings or the error persists after entering your proxy settings.
Firewall
You will need to contact your IT Help Desk if your organization is running a network firewall to configure it to bypass blocked connections to the MathWorks servers.
The MathWorks installer needs to contact MathWorks servers on the following ports and addresses:
  • login.mathworks.com
  • services.mathworks.com
  • TCP ports 80 and 443
Your firewall needs to bypass blocked connections for both addresses over both ports. These servers do not use a Static IP Address and will resolve to a Dynamic IP Address. This means that users will not be able to white-list MathWorks servers via IP Address and will have to use the domain name.

  18 Comments

I put in the proxy information during the installation, and the installation completed without error; but I still can not get the installed application to log in, rendering it useless, unless there is a way to check the configuration files that contain this information for the application.
The installation log follows:
(Oct 20, 2017 16:32:08) ##################################################################
(Oct 20, 2017 16:32:08) #
(Oct 20, 2017 16:32:08) # Today's Date:
(Oct 20, 2017 16:32:08) Fri Oct 20 16:32:08 EDT 2017
(Oct 20, 2017 16:32:08)
(Oct 20, 2017 16:32:08) System Info
(Oct 20, 2017 16:32:08) OS: Mac OS X 10.11.6
(Oct 20, 2017 16:32:08) Arch: x86_64
(Oct 20, 2017 16:32:08) Data Model: 64
(Oct 20, 2017 16:32:08) Language: en
(Oct 20, 2017 16:32:08) Java Vendor: Oracle Corporation
(Oct 20, 2017 16:32:08) Java Home: /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/sys/java/jre/maci64/jre
(Oct 20, 2017 16:32:08) Java Version: 1.8.0_121
(Oct 20, 2017 16:32:08) Java VM Name: Java HotSpot(TM) 64-Bit Server VM
(Oct 20, 2017 16:32:08) Java Class Path: /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/java/config/professionalinstaller/pathlist.jar
(Oct 20, 2017 16:32:08) User Name: gfxeng
(Oct 20, 2017 16:32:08) Current Directory: /
(Oct 20, 2017 16:32:08) Input arguments:
(Oct 20, 2017 16:32:08) root /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:08) libdir /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:08) psn_0_553095 true
(Oct 20, 2017 16:32:08) standalone true
(Oct 20, 2017 16:32:24) Starting local product/component search in download directory
(Oct 20, 2017 16:32:24) Searching for archives...
(Oct 20, 2017 16:32:24) Reading /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/archives
(Oct 20, 2017 16:32:24) 2 files found in /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835/archives
(Oct 20, 2017 16:32:24) Reading /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:24) 17 files found in /private/var/folders/15/4fygbdj12p3gl34pc4lrx29c0000gn/T/installer_835
(Oct 20, 2017 16:32:24) /Users/spoccyl12/Downloads/MathWorks/R2017b/archives doesn't exist ... skipping.
(Oct 20, 2017 16:32:24) Archive search complete. 19 total files found.
(Oct 20, 2017 16:32:24) Completed local product/component search
(Oct 20, 2017 16:33:10) Contacting MathWorks
(Oct 20, 2017 16:33:25) Validating account information
(Oct 20, 2017 16:33:25) Retrieving license data
(Oct 20, 2017 16:33:31) Fetching settings
(Oct 20, 2017 16:33:31) Retrieving product data
(Oct 20, 2017 16:33:31) Verifying account information
(Oct 20, 2017 16:33:34) Completed local product/component search
(Oct 20, 2017 16:33:34) Retrieving license data
(Oct 20, 2017 16:33:34) Default Installation Folder: /Applications
(Oct 20, 2017 16:33:44) Confirmation Text:
Installation folder:
/Applications/MATLAB_R2017b.app
Download Size: 2,956 MB
Installation Size: 8,187 MB
Products:
MATLAB 9.3 (download)
Bioinformatics Toolbox 4.9 (download)
Curve Fitting Toolbox 3.5.6 (download)
Global Optimization Toolbox 3.4.3 (download)
Image Processing Toolbox 10.1 (download)
Instrument Control Toolbox 3.12 (download)
Optimization Toolbox 8.0 (download)
Parallel Computing Toolbox 6.11 (download)
Signal Processing Toolbox 7.5 (download)
SimBiology 5.7 (download)
Statistics and Machine Learning Toolbox 11.2 (download)
(Oct 20, 2017 16:33:45) Starting Download: MATLAB 9.3 : 1,004,668,042 bytes
(Oct 20, 2017 16:35:06) Starting Download: Bioinformatics Toolbox 4.9 : 186,318,623 bytes
(Oct 20, 2017 16:35:11) Starting Download: Curve Fitting Toolbox 3.5.6 : 17,805,608 bytes
(Oct 20, 2017 16:35:13) Starting Download: Global Optimization Toolbox 3.4.3 : 10,772,555 bytes
(Oct 20, 2017 16:35:14) Starting Download: Image Processing Toolbox 10.1 : 907,193,788 bytes
(Oct 20, 2017 16:35:47) Starting Download: Instrument Control Toolbox 3.12 : 9,296,793 bytes
(Oct 20, 2017 16:35:47) Starting Download: Optimization Toolbox 8.0 : 24,245,843 bytes
(Oct 20, 2017 16:35:48) Starting Download: Parallel Computing Toolbox 6.11 : 179,844,453 bytes
(Oct 20, 2017 16:35:58) Starting Download: Signal Processing Toolbox 7.5 : 327,597,138 bytes
(Oct 20, 2017 16:36:08) Starting Download: SimBiology 5.7 : 46,742,761 bytes
(Oct 20, 2017 16:36:10) Starting Download: Statistics and Machine Learning Toolbox 11.2 : 385,321,337 bytes
(Oct 20, 2017 16:36:17) Installing Product: MATLAB 9.3
(Oct 20, 2017 16:37:19) Installing Product: Bioinformatics Toolbox 4.9
(Oct 20, 2017 16:37:23) Installing Product: Curve Fitting Toolbox 3.5.6
(Oct 20, 2017 16:37:24) Installing Product: Global Optimization Toolbox 3.4.3
(Oct 20, 2017 16:37:25) Installing Product: Image Processing Toolbox 10.1
(Oct 20, 2017 16:37:47) Installing Product: Instrument Control Toolbox 3.12
(Oct 20, 2017 16:37:48) Installing Product: Optimization Toolbox 8.0
(Oct 20, 2017 16:37:49) Installing Product: Parallel Computing Toolbox 6.11
(Oct 20, 2017 16:37:55) Installing Product: Signal Processing Toolbox 7.5
(Oct 20, 2017 16:38:12) Installing Product: SimBiology 5.7
(Oct 20, 2017 16:38:17) Installing Product: Statistics and Machine Learning Toolbox 11.2
(Oct 20, 2017 16:38:29) Updating file associations at /Applications/MATLAB_R2017b.app
(Oct 20, 2017 16:38:29) Successfully updated file associations at /Applications/MATLAB_R2017b.app
(Oct 20, 2017 16:38:35) Notes:
Your installation may require additional configuration steps.
1. To accelerate computations with the following products, a supported compiler is required:
SimBiology 5.7
(Oct 20, 2017 16:41:51) Exiting with status 0
(Oct 20, 2017 16:41:51) End - Successful.
Weird that the error goes away on my VPN and not on home internet without any firewall.

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Answer by Sean
on 30 Jul 2014

When I received this error, it was not due to proxy settings or firewall settings. Rather, when I downloaded the installer, the download location was on a remote drive (a windows remote profile DFS location). I copied the setup file to the local drive, and it ran fine.

  3 Comments

Similar here - got this error with many internet connection settings when running the installer from my user desktop. Moved the installer to the local drive (C:) and ran with admin privileges and it worked fine.
Can anyone from MathWorks explain why the installer for many releases of MATLAB inaccurately complains about proxy servers when run from a network drive?
Same here. Moved the installer file to C drive and then it worked.

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Answer by Brian Zarling on 16 Feb 2015

I turned off my firewall and I still can't connect to Mathworks.

Answer by Chris Håkansson on 23 Feb 2015

I had the same problem and followed all instructions above about filling in proxy-server information and deactivating the firewall etc. but nothing worked. Turned out all I needed to do was uncheck the box which indicates to use a proxy server. It is as mentioned in other links found in Control Panel/Internet Options/Connections/Lan Settings.

  2 Comments

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Answer by Jon
on 16 Dec 2014

On a Mac (running 10.10 [Yosemite]) I still needed to temporarily disable the Firewall (under System Preferences > Security & Privacy) in order to complete activation.

Answer by Gregg Casey on 29 Dec 2017

Had the same problem on my Mac and I have never had a problem like this on a Mac since I have used them. (Probably more than 8 years.) My laptop did not have the firewall turned on at all during all attempts. So this is probably just badly written software from Mathworks. What worked for me is to use my hotspot. That is all I changed - connect to my Karma hotspot and click "Next" again. Done. Note that I first did the same after connecting to my iPhone as a hotspot and that did not work. (Just clicked "next" and got the same error message.) However, that could have been that my phone was having a connection issue.
Mathworks- please look into this issue and fix it. The software should not require special proxy settings.

  3 Comments

Me too, maybe you should try it for a couple more times. I only successfully installed it after 10 times, but I made it at last.
I can only use hotspot to install. Have tried every method that I can imagine.
Hello Ben,
If you are unable to activate successfully through your hotspot, you can try to activate MATLAB through the manual method. I have attached a link below that explins this process:

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Answer by Anna Smirnova on 1 Jul 2018

Error : unable to connect to host. sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
Windows 7 64-bit. What am I doing wrong?

  0 Comments

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Answer by Matthias Finsterbusch on 2 Jul 2018

I am trying to install Matlab 2018b on a Win10 64bit System, getting the following error:
"Error : unable to connect to host. sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"
Any instructions how to handle this problem? Thanks in advance.

Answer by Donald Niman on 23 Feb 2015

This is what I did to successfully install Matlab (Home Use) on my Windows 7 x64 SP1 system. Note that I do not know which one of the following things helped to make things work; I just did all of them. Also note that I am not using a proxy server, if you are, this will probably not help you.
1. Turned off internet router and then turned it back on.
2. Restarted the PC in Safe Mode.
3. If applicable to you: The installation file was on hard drive volume D:\ and I moved it to C:\
4. From control panel->administrative tools->Services, I right-clicked "Windows Firewall" and selected "Stop".
5. I ran the Matlab installation file from c:\.
6. When the installation screen came up, I did not click on the button at the top right of the dialog. Instead, I clicked the "next" button at the bottom. (Of course, I am not using a proxy server.)
7. A dialog appears to enter your login credentials: do that and the installation will continue.
8. The installation will eventually complete and then you can activate it by following the on-screen directions.
9. I restarted the system normally and verified that Matlab was working.
(Hopefully, I did not leave anything out.)

Answer by Caitlyn Hampel on 24 May 2015

I had this problem as well, but I found that it was because my internet connection was too slow. So it only worked when I used a faster connection. Beware that the downloads during installation are rather large files, including the toolbox add-ons. Hope this information can be of help to others.

  1 Comment

I had the same issue but it must have been my connection speed, because it worked on the third attempt without me actually changing anything.

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Answer by Furkaan Hossain on 25 Aug 2017

Hi there, I am using a Window's 10 on my pc. Not a part of any organizations. As far as I can tell I am not using a proxy server and I tried installing MATLAB with my firewall turned off as an administrator. I am still encountering the connection error. Any help in the matter would be greatly appreciated. Thnks

  6 Comments

Experiencing this problem as well after troubleshooting on Sept. 11, 2017 from 2:00pm to present (3:43PM)
Is it still down? My error just reads 'The application could not connect to MathWorks' and nothing about firewalls or proxys

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Answer by Yehya Jebbaoui on 28 Sep 2017

Turn off the Wifi of the institution you are in, then turn on Mobile hotspot on your phone to share the mobile connection (if you have 3G or 4G). You will pass the first steps and it will start downloading. When it starts downloading, switch to the wifi. It worked for me.

  0 Comments

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Answer by Zhaobo Zhang on 5 Nov 2017

just try it again and again

  0 Comments

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Answer by khalid Houhou on 28 Feb 2018

I had this issue and it was not related to any network or connection. It was caused by a Malware I had in my PC called relevantknowledge. I uninstall it and it worked.

  0 Comments

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Answer by Dewi Mar'a on 20 Nov 2018 at 3:40

I am dealing with the same problem. After almost a week I tried to install matlab more than hundred times, then I got no solution at all. My windows firewall was off, no proxy setting, no anti virus installed, even no matlab installed yet.
I am getting deperate with this problem because my deadline project comes closer, and I wasted the time too much to deal with this problem.
finally I end up with the last solution left, I tried to uninstall my windows, and try to install matlab again. BAAAAMMM....it works. do anything to get out of this stuck step. if it ends with great result, why not ? haha

  0 Comments

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Answer by Luke
on 26 Nov 2014
Edited by Luke
on 26 Nov 2014

Internet security software designed to block certain IP ranges such as PeerBlock have MathWorks black listed in the default block-list.
Just set the blocked IP to "allow permanently" to let the installer connect and download your license details, software and associated toolboxes.

  1 Comment

Mathworks delivers some of its content using one of the major cloud providers. It might be the case that the cloud provider is what is blacklisted rather than Mathworks itself.

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Answer by Greg Laurie on 2 May 2015

I've also tried all of these tips, but activation via my account here doesn't work. So I tried using the File Installation Key process, but I always get the following error message: "Using a File Installation Key requires you run the installer from a MATLAB DVD or from a directory which contains files previously downloaded via the installer. To obtain the missing files, click Back on the previous screen and select Log in with a MathWorks Account or contact your MATLAB license administrator." I did get the licence code file and all. Any ideas? I need the software for a Coursera MOOC about Computational Neuroscience. Thanks in advance!

  1 Comment

Hi Greg,
If you are still having trouble installing MATLAB, please contact MathWorks support:
-Scott
MathWorks Installation & Licensing Support

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Answer by Charles Dalley on 5 May 2015

Right. I have restarted the process multiple times! I've checked all the suggested settings and turned off windows firewall, but every time I get to the 'select license' page having logged in, it stops me from proceeding even though it clearly is connected as it got the details in the first place!
and it blocks me from doing the license file thing, saying 'no products exist for this license' even though I activated it for 2014a
HELP, I HAVE COURSEWORK DUE

  1 Comment

Hi Charles,
If you are still having trouble installing MATLAB, please contact MathWorks support:
-Scott
MathWorks Installation & Licensing Support

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Answer by Bradley Alderton on 6 May 2015

Charles, i'm in the same position as you. I have coursework due tomorrow and this is quite a headache!

  1 Comment

Hi Bradley,
If you are still having trouble installing MATLAB, please contact MathWorks support:
-Scott
MathWorks Installation & Licensing Support

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Answer by Carsten Jorgensen on 15 Jul 2015

I just came across this same error. At first, I assumed it was because I was installing on a Windows XP system. When I discovered that Win XP was still supported for 2015a, I decided to troubleshoot further.
My resolution: The system could not communicate with the MatLab servers because the Date/Time on the system was inaccurate. - Setting the systems Date/Time correctly resolved the issue.

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Answer by Andreas
on 15 Sep 2015

The setup program was trying to go to the IP address of the mathworks site instead of DNS name. Had to add https://144.212.244.21 and https://144.212.244.16 to the firewall.
It is unclear to me why MathWorks would use fixed IP addresses instead of DNS. Please fix this issue.

  1 Comment

Andreas,
The installer does reach out to the MathWorks servers using DNS, not IP address. The IP addresses for those servers are static, yes, but that's not what the installer uses to reach them.
If the MATLAB installer is consistently resolving the wrong IP address for MathWorks service and activation servers on your machine, please contact MathWorks support so we can troubleshoot this issue.
Thanks,
-Scott
MathWorks Installation & Licensing Support

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Answer by Tony Langley on 5 Dec 2015

I recently faced the same issue on my Mac. It wasn't because I was using a network proxy (per se) or that the I had OSX's firewall turned on.
Eventually I worked out that it was because of Kaspersky Internet Security. So I temporarily disabled that which then allowed the installer to work.

  3 Comments

I had the same prob on my mac. I discovered that I have to open it in the same network as I installed the software. Support didn´t provide any help. For me it´s over and out, I stick with Mathematica...
Mathematica uses exactly the same license manager (but possibly a different revision at present.)
Having this issue on a Mac with El Capitan. Confirmed with Network Utility that we could reach both ports 80 and 443 at both urls listed above. Firewalls were turned off on both individual machine and router. Suggestions?

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Answer by Manoella Sánchez on 7 Jan 2016

I have a problem with the process. I need log in with MathWorks account. The messenge is " The application could not connect to MathWorks. For more information on resolving this issue, see this Support Article" Please help me.

  1 Comment

I am facing the same problem and no reply for MathWorks support team.

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Answer by Birds Mafereka on 24 Feb 2016

The following error was detected while downloading 3p/icu_win64_1438296709.enc: null Would you like to retry downloading 3p/icu_win64_1438296709.enc? If you press No, the installer will exit without completing the installation. Hepl please I got this error and it keeps on poping when trying to download?????

  1 Comment

Hi Birds,
This type of error usually indicates that security software or antivirus software installed on your machine is interfering with the MATLAB installer. To resolve this issue, add the MATLAB installer to your security software's whitelist, or disable your security software for the duration of the installation.
Thanks,
-Scott
MathWorks Installation & Licensing Support

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Answer by Yu Xiong
on 8 Mar 2016

I have got the same issue here and no idea what I should fill in on Server and Port.

  2 Comments

Please contact Technical Support using the Contact Us link in the upper-right corner of this page for assistance.

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Answer by Michael Rook on 18 Jul 2016

I am attempting to install MatLab for the QUT Robotics course. I have downloaded the files but I cant install anything. It says it cant connect to Mathworks. In the Connection Settings box it is asking for information I dont know. It says I can leave it blank, but does not work that way either. I can't submit a Ticket as I have no License Number. I am on a home computer with a wireless modem. I have a Mathworks account. How do I install this program as nothing seems to work and I need to start this course now?

  0 Comments

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Answer by SEI U
on 16 Jan 2017

プロキシサーバー認証の画面にユーザーとパスワードを入れて下記のエラーメッセージがありました。 「アプリケーションは MathWorks に接続できませんでした」

  1 Comment

Approximate translation:
I entered the user and password on the proxy server authentication screen and the following error message was found. "The application could not connect to MathWorks"

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Answer by mohamed essam on 25 Feb 2017

الرساله دي بتظهلي لما اعمل activation
<The application could not connect to MathWorks. For more information on resolving this issue>

  1 Comment

Hi Mohamed,
If you are still experiencing a connection issue during Install or Activation and have tried the solution listed above, then please contact MathWorks Support for further assistance. Our contact information can be listed in the link below.
https://www.mathworks.com/support/contact_us/

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Answer by Ismael Núñez Pereira on 25 Sep 2017

Dear Sirs The best answer for installing Matlab in Windows 10 was done by Dalan3r on 28 Sep 2016. Thank you Dalan3r!

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Answer by Daniel
on 26 Oct 2017

The buttons on the window "Mathworks Software Activation" are even broken now. All that work for nothing. Why are there always major issues with installations from Mathworks?

  1 Comment

Worked now by just opening a new window. I'm happy now!

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Answer by Jaco
on 29 Mar 2018

This is so annoying! Every six months it is a massive struggle just to download the latest update. It seems overkill that it is so protected!! Please mathworks do something about this.

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Answer by Uros Jovanovic on 23 Apr 2018

Anyone has a way of dealing with this problem beside asking for tech support?

  2 Comments

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Answer by Nec
on 12 Jun 2018

I have the same error on activating 2018a. Somehow it goes away on my VPN while never works on my Mac and home or work internet without any firewall.

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Answer by Sung Ho Kim on 24 Oct 2018

i have error massage like this 'unable to connect to host. Extensions not allowed in v2 certificate' in Matlab 2018b window 64bit version. what is problem?

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Answer by parinya thammavong on 30 Oct 2018

Hi How can i install?if my computer is show this picture

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Answer by ramesh
on 21 Nov 2018 at 1:22

The ``Accepted Solution" does not work for linux.
Issue: Trying to install matlab using the downloaded installer. At the ``Folder Selection" step, now infamous error, ``Connection Error" is thrown.
The system:
  1. Doesn't have Antivirus Software
  2. Doesn't have a proxy
  3. Has Firewall service stopped
However, the installer still isn't moving forward. Needless to say, every other website/service connection works.
I am more inclined to think that the problem lies on the mathworks side rather than the users' side. Before this error, I had an unsuccessful installation due to my machine freezing. I am not sure why anyone would blacklist mathworks.com. TCP port 80, I believe, is for http, and I'm not sure how anyone would be able to browse any website with that port closed. Yet one of the steps of the solution is to open that port. My suggestion is to separate the operating system and not lump solutions together. Clearly, matlab behaves differently in different systems, e.g. the proxy settings.

  1 Comment

Update:
Tried one last time before quitting and now the installer is moving along. I even had the firewall restarted. I guess the best solution is to continue trying as few have mentioned. Maybe mathworks needs to look at it further.

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