Received this error when trying to clone a repository to my windows 11 laptop.

[MrKwamiD-86]

Cloning into 'C:\Users\adank\Documents\TWR2019-2023'...
remote: Enumerating objects: 132, done.
remote: Counting objects: 100% (72/72), done.
remote: Compressing objects: 100% (63/63), done.
remote: Total 132 (delta 23), reused 40 (delta 1), pack-reused 60
Receiving objects: 100% (132/132), 22.46 KiB | 4.49 MiB/s, done.
Resolving deltas: 100% (45/45), done.
0 [main] sh (4320) C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x1371408/0x1321408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
0 [main] sh 677 dofork: child -1 - forked process 4320 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\mingw64\libexec\git-core\git-submodule: fork: retry: Resource temporarily unavailable
0 [main] sh (1856) C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x1371408/0x1171408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
1167436 [main] sh 677 dofork: child -1 - forked process 1856 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\mingw64\libexec\git-core\git-submodule: fork: retry: Resource temporarily unavailable
0 [main] sh (15172) C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x1371408/0x12E1408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
3317780 [main] sh 677 dofork: child -1 - forked process 15172 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\mingw64\libexec\git-core\git-submodule: fork: retry: Resource temporarily unavailable
0 [main] sh (14808) C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x1371408/0x1121408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
7487862 [main] sh 677 dofork: child -1 - forked process 14808 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\mingw64\libexec\git-core\git-submodule: fork: retry: Resource temporarily unavailable
1 [main] sh (17196) C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x1371408/0x1391408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
15654326 [main] sh 677 dofork: child -1 - forked process 17196 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Users\adank\AppData\Local\GitHubDesktop\app-3.3.5\resources\app\git\mingw64\libexec\git-core\git-submodule: fork: Resource temporarily unavailable

This error keeps me from accessing the repository via the github desktop app, and in turn, prevents me from working locally. Thanks for any help/insight.
P.s. I am able to run github desktop fine on my windows 11 desktop. Just not so with my laptop. ☹️

[MrKwamiD-86]

Solved the problem!
Had to disable Mandatory ASLR.

To do this:
Go to 'Windows Security' > Select 'App & Browser Control' > Select 'Exploit Protection Settings' > Find 'Force Randomization For Images (Mandatory ASLR)' > Select 'Off' > Restart computer.
:)

[drkdiniz]

Hi, I had the same problem as you and I managed to solve it by following this tutorial. Thank you very much.

[Exstreme-Noob]

Had the same problem and it worked. Thank you very much.