You normally need a license code to install Maple 2024 and a Maplesoft Product Download Link. See here for details:
https://www.maplesoft.com/support/downloads/index.aspx

If you have a valid license Maplesoft might give you access to older versions but for this you have to contact them, because each version of Maple comes with a separate license code.

@Ronan 
Strange. I cannot do this. When I right click on running instances of Maple in the task bar, I only get the option to close the window. Other applications can be pinned. Maybe I can't do this because the applications are pinned to the start menu.

I any case, I do not see why pinning to the task bar should make a difference to pinning to the start menu (which allows chaning the kernel mode on my installation)

@Ronan 

You could try it manually by setting  in the ini file
C:\Users\<your-user-name>\AppData\Roaming\Maple\<version>\Maple.ini

If you can't find the ini file there it is stored where Maple is installed and it is only changeable if you start Maple as Admin.

@Jean-Michel 

Strange. I would give it a second try. Uninstall everything, restart your computer, log-in as admin (automatic updating Maple on my machine with a user account does not work), install the 2026.0 distribution (installing the update 2026.1 without a preexisting Maple version will not work), test this distribution and then update to 2026.1.

I once had a corrupted download file. Only with a new download I could propperly install Maple. These cases are rare but you might want to try a fresh download as well.

If it does not work, you have to contact support.

To reproduce or compare it to own observations, more details are needed.
Does the GUI not work at all or do you experience unresposiveness after loading or executing and worksheet?

@vv 

You are rigth. I changed to antiderivative difference. Thank you

@acer 
The additive constant fit's to ?Definition,antiderivative and ?Definition,integrate in Maple's help system.
So, the results seems to be formally correct (consistent within Maple), but most likely not desired, because the area under the function
D(tanh)(z)

cannot be computed (at least plotted) when z is real valued. This is because the magnitude of "residual" antiderivative difference is zero in the complex plane (note also the arument jumps )

ad_difference := int(D(tanh)(z), z) - tanh(z);
sc := 4;
plots:-complexplot3d(Re(`%%`), z = -sc - sc*I .. sc + sc*I);

but leads to numerical exceptions when evaluated on the real line.

If have tried to understand whether whatever Maple adds to tanh could be related to an identity. The closest I get is of same magnitude but opposite argument

0 = tanh(z) - int(D(tanh)(z), z);
2*(% + z);
map(exp, %);
simplify(%);
convert(%, exp);
simplify(%);

There are plenty of examples here in this forum which are in line with what you said. However it's not easy to find the pearls. 
For a particular problem I suggest asking for examples and/or posting an exemplary version of a problem.

You might not have discovered ?codegen,optimize. Another way to speed-up computation. There is also the package ?CUDA which is supposed to accellerate certain linear algebra routines (it might not work on your local setting).

And if you have the time and are interested in the Maple language and effcient coding, read the ProgrammingGuide. 
 

@vv 
Thank you for correcting me. Since an identity is returned and the below does not show any singularities on the real line

sc := 2;
int(D(tanh)(z), z);
subs(z = re + im*I, %);
plot3d(Re(%), re = -sc .. sc, im = -sc .. sc, title = 'Re');
plot3d(Im(`%%`), re = -sc .. sc, im = -sc .. sc, title = 'Im');

one could assume that result is correct.
However, I could not find a way to combine the logarithmic terms in a way that the result equals tanh. The result does not seem to be valid for the real line

int(D(tanh)(z), z);
combine(%, ln) assuming real;
op([1, 1], %);
plot(%/I, title = %/I);

If I am not again mistaken, the methods returning the result with ln terms should have been listed under FAILS as listed here

int(D(tanh)(z), z, method = _RETURNVERBOSE)

Maybe there is a proof that the result from my original post minus tanh(x) is zero. I do not see this here

sc := 10;
int(D(tanh)(z), z) - tanh(z);
subs(z = re + im*I, %);
plot3d(Re(%), re = -sc .. sc, im = -sc .. sc, title = 'Re');
plot3d(Im(`%%`), re = -sc .. sc, im = -sc .. sc, title = 'Im');

This looks wrong to me on the whole complex plane

@Gillee 

Only for the records, in case someone else want's to make CUDA work:

Today I reset my NVIDA to factory settings. How I get this

Under https://developer.nvidia.com/cuda/gpus I found out that my card is not listed. However your card is listed (i.e. should be supported)...

I also saw that now under Windows 11, the use of the NVIDIA card cannot be configured anymore with the NVIDIA tool. The configuration is managed fully by Windows 11. I tried (before resetting the card) to enable and disable a few settings but did not notice a huge change in performance.

@acer 
Since tanh is elementary I did not consider to use methods but I tried assuming real. I also tried some convert options.

With my limited math background I could not conclude whether the returned result of the default method is correct (under certain restrictions). I would say no in case the below is sufficient proof

int(D(tanh)(x), x);
diff(%, x);
simplify(%) = tanh(x);
is(%);
                    1                   1                
      x + tanh(x) + - ln(tanh(x) - 1) - - ln(tanh(x) + 1)
                    2                   2                

                              2          
                       sech(x)  = tanh(x)

                             false

@Ronan 

With Maple 2026.0 I never got to the point of consuming all credits. After installing 2026.1, two prompts to the large AI model consumed all my credits without returning an answer. (Since then I never used the large model and unchecked "include worksheet".)

My impression is that MapleSoft now has to pay more for tokens to OpenAI (?!? - whoever) and had to devalue the free credits we get each month. Kind of an inflation which goes along with the general trend that AI companies are largely unprofitable. It's an open secret that the plan of AI industry is to make users dependend on AI before prices can be increased. Hopefully MapleSoft can soon provide their own AI without making thrid parties rich (and provide better results). 

On a different Windows machine: With 2026.0 this error did not manifest. After updating to 2026.1 the error was reproducible.

-> Could be an intended limitation or a bug.

@Rouben Rostamian  @nm
I did not get any output, but now I cannot reproduce this after the system returned from standby and switched screens. I can only guess that this was a 2D-Math related. If I manage to reproduce this I will save and post here.
Without knowing operator precedence the output can be ambigeous.

Thank you for your quick reply

@jestrup 
Where do see the Non-Ececutable Math.
In the below example I could apply a command to it.

(This bug must be reported)