MathWorks Support Team

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Simulink Online R2026a hangs when trying to save a new Simulink model with the save button.
In Simulink Online R2026a, this issue with saving models can be resolved programmatically or graphically. Follow the steps below...

1 day ago | 0

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Question

Simulink Online R2026a hangs when trying to save a new Simulink model with the save button.
I am trying to save my Simulink Online R2026a model by clicking the "save" button on the toolbar, but the model fails to save an...

1 day ago | 1 answer | 0

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How to protect intellectual property (IP) with an FMU exported from Simulink?
The FMI standard does not specify anything related to IP protection; however, "Standalone" FMU exports provide some degree of IP...

1 day ago | 2

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How can I use a custom STM32F4xx board with the new "Embedded Coder Support Package for STMicroelectronics STM32 Processors" ?
To configure your model for a STM32F4xx based board, open the Configuration Parameters. Go to Hardware Implementation > ...

1 day ago | 0

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Answered
How can I run my Simscape model on real-time hardware such as Speedgoat and Simulink Real-Time (SLRT)?
We have this documentation page with some best practices for preparing Simscape models for use with real-time hardware:Real-Time...

1 day ago | 0

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Answered
Classification Learner gives different results every time
The reason for the different results is by using k-fold cross-validation method. When starting a new session in the Classificat...

1 day ago | 1

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Answered
Why does a "Discrete‑Time Integrator" block in enabled and triggered subsystems only output its initial condition in MATLAB R2024b?
This behavior is expected when a "Discrete‑Time Integrator" block is placed inside enabled and triggered subsystems with certain...

2 days ago | 0

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Question

Why does a "Discrete‑Time Integrator" block in enabled and triggered subsystems only output its initial condition in MATLAB R2024b?
I am using MATLAB R2024b and created a "Discrete‑Time Integrator" block inside an enabled subsystem, which itself is inside a tr...

2 days ago | 1 answer | 0

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Personal License Passcode (PLP) やライセンスファイルとは何ですか？またどのように取得しますか？
Personal License Passcode（PLP）は、Windows マシン上で MATLAB R2007b 以前をインストールするために使用される、固有の番号列です。R2008a 以降では、PLP は MATLAB のインストールには使用されな...

2 days ago | 0

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Answered
Why do I get the error message "System target file 'speedgoat.tlc' cannot be found"?
In R2024a and later, Simulink Real-Time (SLRT) uses the "speedgoat.tlc" system target file for Speedgoat hardware. This system t...

2 days ago | 0

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Answered
Why does MATLAB R2025b crash when opening Simulink through MATLAB MCP Core Server on Windows with Codex?
Why does MATLAB Crash? This behavior occurs in MATLAB R2025b on Windows when MATLAB is launched through the MATLAB MCP Core Serv...

2 days ago | 0

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Answered
Why am I unable to generate graphics on some non‑Windows systems when using MATLAB Online?
MATLAB Online uses WebGL to render high‑performance and interactive graphics. In the past, Chromium‑based browsers (such as Goog...

2 days ago | 0

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Answered
활성화 도중 오류 354가 발생합니다.
이 오류는 라이선스의 연간 컴퓨터 재지정(이전) 횟수를 초과했을 때 발생합니다. 라이선스를 새 컴퓨터로 이전하려면 다음 재지정 가능 시점까지 기다려야 합니다. 그동안 다른 컴퓨터에 이미 MATLAB이 설치되어 있다면, Login ...

2 days ago | 0

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Answered
Why does an output variable from a MATLAB Function block not update a model variable with the same name?
This is expected behavior. Like regular MATLAB functions, MATLAB Function blocks in Simulink have their own internal workspace. ...

3 days ago | 0

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Answered
Why do I get "You are not permitted to use this license" when trying to access my University license?
This message is shown when your university has not listed you as a valid user within the university's identity management system...

3 days ago | 1

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Answered
Why do I receive MathWorks Licensing Error 5008 or 5009?
Please follow the troubleshooting steps from the MATLAB Answer linked below. Why do I receive the error "This email is not linke...

3 days ago | 0

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Answered
Why do I see multiple MATLAB Desktop issues when using unsupported Windows versions with MATLAB R2025a and later?
In MATLAB R2025a and later, issues can occur when the MATLAB Desktop is run on unsupported Windows versions for that release, s...

3 days ago | 0

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Question

Why do I see multiple MATLAB Desktop issues when using unsupported Windows versions with MATLAB R2025a and later?
I am running MATLAB R2025a, R2025b, or a later release on Windows, and I experience multiple issues with the MATLAB Desktop. Fo...

3 days ago | 1 answer | 0

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Answered
What is a Personal License Passcode (PLP) or a license file and how do I obtain one for my MATLAB license?
A Personal License Passcode (PLP) is a unique string of numbers that enables the installation of MATLAB R2007b and earlier on a ...

4 days ago | 0

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Answered
How do I purchase a new Home/Student License?
In order to purchase a MATLAB License, you must log in to your MathWorks Account.  Please note that Home Use and Student Ve...

4 days ago | 0

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Answered
Why is my USB device not recognized by the Speedgoat target computer, with an error saying "USB serial port error"?
This error message means that the device has not been found. Some debugging tips are as follows: 1) Double-check your hardware s...

4 days ago | 0

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Answered
Why are there no instructions for the Simscape Multibody Link and Creo?
The missing section of documentation is currently under investigation by MathWorks.   In the interim, the relevant ins...

5 days ago | 0

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Question

Why are there no instructions for the Simscape Multibody Link and Creo?
I am trying to install the Simscape MultiBody Link to use with Creo.  When I get to step 4 of the instructions listed at ht...

5 days ago | 1 answer | 0

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Where can I track outages for Mathworks applications?
The following webpage will be updated to reflect any outages for MathWorks applications: https://status.mathworks.com/

5 days ago | 0

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Answered
How can I create nested FMUs with tunable parameters in Simulink?
To do this workflow, follow these steps:Create the inner FMUs. To do this, create a Simulink model and determine which parameter...

5 days ago | 0

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Answered
How can I recover the password for my MathWorks Account?
If you are unable to retrieve your password or if your MathWorks Account has been locked, you can reset the password by using th...

5 days ago | 0

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Answered
How do I use Dependency Walker with MATLAB?
Dependency Walker has not been updated since 2006 and is not and does also not officially support Windows 10 or 11. See "Ho...

5 days ago | 2

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Answered
Why am I getting inconsistent reports between FEATURE MEMSTATS and MEMORY in MATLAB 7.6 (R2008a)?
The use of FEATURE MEMSTATS to estimate the largest block of contiguous memory is limited to 32-bit Windows platforms as describ...

5 days ago | 1

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Answered
Why do I receive an "out of memory" error when I execute the function SVMTRAIN in the Bioinformatics Toolbox 2.0.1 (R14SP2)?
If the SVMTRAIN function has to operate on a data set containing N elements, it creates a (N+1) by (N+1) matrix to find the sepa...

5 days ago | 0

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Answered
How can I monitor how much memory MATLAB is using?
Unfortunately, there is not a convenient way to monitor memory usage in MATLAB. However, the attached function can help monitor ...

5 days ago | 1

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