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Why does the MATLAB installer fail with an error related to a lxe_win64 or .enc file?

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When installing MATLAB on my machine I get an error like the following:
The following error was detected while installing lxe_win64:
Missing Entry: lxe_win64_1368859906.enc
OR
"Missing Entry: lxe_common_1384906630.enc
Would you like to retry installing lxe_win64/lxe_common? If you press NO, the installer will exit without completing the installation. More information can be found at C:\Users\<user_name>\AppData\Local\Temp\mathworks_<user_name>.log

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 10 Oct 2019
Edited: MathWorks Support Team on 10 Oct 2019
There are a few reasons why you may be getting this error. Please try the following steps to resolve the issue..
1) This error can be caused by an anti-virus or security program interfering with the MATLAB installer. Please try disabling any anti-virus you may have running and then try to install again.
2) There may be an issue with the target installation directory. You will want to try installing into a new directory that did not previously exist on the system.
NOTE: Please remove the folder in the following path as well: C:\Users\<username>\AppData\Local\MathWorks\MATLAB\R20XXx
3) If you installed a prerelease of MATLAB, cancel the installation and remove the existing prerelease installation. Once the previous prerelease installation folder has been removed then start the installer again.
4) If you are installing R2018a and older, the files that you downloaded may be corrupt or incomplete. Delete all of the installation files on your system, and download your products again from your MathWorks Account.

More Answers (20)

dadou nassim
dadou nassim on 17 Apr 2020
Hello, can you help me with this?
please

  36 Comments

Colin Fraser
Colin Fraser on 19 May 2020 at 12:20
We did recently release a new MATLAB Update with the installer that might resolve some of these issues. It would be worth trying to download the installer again and attempting.
If you are still experiencing this issue, please create a service request below.
-Colin Fraser

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Ambuj Kumar Gautam
Ambuj Kumar Gautam on 22 Apr 2020
Hi,
I m installing MATLAB2020. and I am getting null kind of error. Attached as picture.
Please help me to resolve this issue.
Thank You

  12 Comments

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Abraham Valdez
Abraham Valdez on 18 May 2020 at 2:08
I click advanced options and choose download without install and I could download the files, after I installed the softwared normally.

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Carlos Orduno-Albarran
Carlos Orduno-Albarran on 5 Feb 2020
Edited: Carlos Orduno-Albarran on 6 Feb 2020
I tried all the other options and none of those fixed my issue, and installing it into a new directory fixed the issue. I just added a 2 at the end of the proposed directory.
this is the issue that I had.
m3i_core_win64_1574376026.enc
m3i_core_win64
another step that I made, but I'm not sure if that helped, I installed just matlab and simulink first, after it was completed and activated, I installed the rest of the packages.
UPDATE: I just had a similar issue while updating Matlab on my Mac.
m3i_core_maci64_1574371482, m3i_core_maci64
this is what I did, I deleted the folder from Applications and installed first Matlab and Simulink, that avoided the extract error.Screen Shot 2020-02-05 at 4.22.00 PM.png

  2 Comments

Walter Roberson
Walter Roberson on 1 Apr 2020
It is strange that a Windows system would want to download a Mac-specific file, m3i_core_maci64.*
When I look through the R2019b installation, it appears that you might be able work around that file being missing by not installing the toolboxes that depend upon it. If you do that, you could at least proceed with the installation, and then come back later to try to do the others, perhaps one at a time.
The toolboxes that want m3i_core* appear to be:
  • Antenna Toolbox
  • Bioinformations Toolbox
  • Deep Learning Toolbox
  • Fixed-Point Designer
  • Image Processing Toolbox
  • MATLAB Coder
  • MATLAB Report Generator
  • RF Toolbox
  • Signal Processing TOolbox
  • SimBiology
  • Simulink
  • Stateflow
  • Symbolic Math
  • Wavelet
I would suggest turning off installing those for the moment, getting everything else installed, and then going back to try to install Simulink.

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nelson duarte
nelson duarte on 27 Mar 2020
can anyone help me? i have windows pro and mcfee actived. any suggestion

  12 Comments

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Image Analyst
Image Analyst on 15 Apr 2020
Are you saying the recommended step of contacting Mathworks Support did not work? Did they just tell you to get lost? Or did they try to fix it but just threw up their hands? Exactly what did Mathworks Support do to try to help you?

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choudong zemtsop ulrich
choudong zemtsop ulrich on 24 Apr 2020
I had a problem when installing matlab. in fact the intallation could no longer continue because they were missing some files that I don't know

  0 Comments

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lorenzo ricciardi
lorenzo ricciardi on 5 Mar 2020
Hi, when installing MATLAB on my machine I get an error like the following:
" he following error was detected while downloading 3p/eclipsexbaseruntimelibrary_common_1563491806.enc:
Connection reset
Would you like to retry downloading 3p/eclipsexbaseruntimelibrary_common_1563491806.enc? If you press No, the installer will exit without completing the installation.
YES OR NO "
i'll wait an answer.

stone wu
stone wu on 20 Mar 2020
What means of “Wrong number bytes:Expected 13043816 got 6661064” appeared on my screen during I installing Matalab R2020a. Pleas show me the way to install Matalab R2020a.

  1 Comment

Walter Roberson
Walter Roberson on 20 Mar 2020
Something interfered with downloading one of the files. You will need to try downloading that part again.

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Frederic Noudjeu
Frederic Noudjeu on 22 Mar 2020
i use to try it twice, but didn,t get the right answer to complet the installation.
Please help me

  1 Comment

Nourah Almoallem
Nourah Almoallem on 22 Mar 2020
try to install just matlab and simulink first, after it was completed and activated, then try to install the rest of the packages..

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wafaa alesse
wafaa alesse on 24 Mar 2020
try to install just matlab and simulink first, after it was completed and activated, then try to install the rest of the packages.

  1 Comment

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Koffi Clement YAO
Koffi Clement YAO on 1 Apr 2020
Yes continue

  3 Comments

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Richard L
Richard L on 12 May 2020 at 12:50
I have the same problem before, but solved now.
A line like
Caused by: java.lang.Exception: Read timed out
can be found in the log file which can be export in Terminal.app on macOS by
cp $TMPDIR/mathworks_$USER.log ./
. I realized that my Mac had no java installed.
After installing java with brew, the downloading is in progress well by now.

  0 Comments

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Kim Olszewski
Kim Olszewski on 14 May 2020 at 14:26
Good morning,
After I installed 2020a it worked. I then went to upgrade the software using 2020a Update 2 shown at
I get the attached error. Mathwork’s solution (as I understand) is at
After this error occurs I can no longer run R2020a. Also I tried to reinstall Matlab 2020a but the installer won’t work after the error occurs and gives the same error again.
I tried to uninstall the R2020a software using Windows and Matlab and the same error screen pops up.
Anybody have a solution.
Thanks,
Kim

  1 Comment

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