How to upgrade PuTTY from the version shipped with MATLAB to the latest version?

When a security protection software scans my MATLAB installation, it indicates that the file "putty.exe" is too old and needs to be updated to the latest version (e.g., 0.63). How can I do this?

Answer 1

[MathWorks Support Team]

To perform this upgrade, carry out follow the steps. You may need administrator or super-user privilege to perform these steps.

1) Locate the path to the PuTTY executables shipped with MATLAB. This can be done by using the following command in MATLAB:

    >> disp(fullfile(matlabroot, 'toolbox', 'idelink', 'foundation', 'hostapps'));

For example, on Windows, the path can be something like:

    "C:\Program Files (x86)\MATLAB\R2014a\toolbox\idelink\foundation\hostapps"

2) Navigate to that folder using Windows Explorer. You should see three EXE files in this directory, named:

    plink.exe

    pscp.exe

    putty.exe

    

These files have the older version number (e.g., 0.61).

3) For backup purpose, create a new directory called "0.61" and move the three aforementioned files into the new directory.

4) Go to PuTTY's official website:

https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

Download the three EXE files of the desired version (e.g., 0.63) into the directory where the older-version PuTTY executables were previously found (e.g., "C:\Program Files (x86)\MATLAB\R2023a\toolbox\idelink\foundation\hostapps")

plink.exe 

http://the.earth.li/~sgtatham/putty/latest/x86/plink.exe

pscp.exe 

http://the.earth.li/~sgtatham/putty/latest/x86/pscp.exe

putty.exe 

http://the.earth.li/~sgtatham/putty/latest/x86/putty.exe