Why do I get the warning "MATLAB:di​spatcher:I​nexactCase​Match Cannot find an exact (case-sensitive) match for 'startup'" on MATLAB startup?

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On startup the following message is displayed:
Warning: Executing startup failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup, which should
be resolved as soon as possible. Error detected was:
Cannot find an exact (case-sensitive) match for 'startup'
The closest match is: Startup in C:\Users\timdu\Documents\MATLAB\StartUp.m

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 6 Nov 2019
The startup file MATLAB searches for is case sensitive.
In order to resolve this issue, the current 'StartUp.m' file should be renamed to 'startup.m'.

More Answers (1)

Bill Tubbs
Bill Tubbs on 20 Sep 2020
Edited: Bill Tubbs on 20 Sep 2020
For me the problem started after I added a path to a module that I am using for a course. The scripts in this module are launched using a script called 'Startup.m' and I was told to add its directory to the Matlab path (which I did using addpath).
So, to fix it I did this:
and now I do not get the warning at startup.
Presumably the Matlab system also uses a file called 'startup.m' somewhere and therefore you must never create a file with that name and permanently add it to the path.


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