gcc in mingw64 not work anymore, cc1.exe: error ... - GitHub
Then add the bin folder (e.g., C:\msys64\mingw64\bin ) to your system PATH .
The compiler cannot find the DLL if its location isn't registered in Windows. Search for "Edit the system environment variables" in your Start menu. Environment Variables under "System variables" > click Ensure the folder of your installation (e.g., C:\msys64\mingw64\bin ) is listed. Visual Studio Code 3. Manual Restoration (MSYS2 Users) libisl-23.dll not found
. Always source the file from your official compiler distribution to add a folder to your Windows Path
Search your computer for libisl-*.dll (e.g., libisl-15.dll ). If you have a different version, you can: gcc in mingw64 not work anymore, cc1
and add your compiler's folder to the antivirus exclusion list
Several reasons can lead to the libisl-23.dll not found error: Search for "Edit the system environment variables" in
The error is a . The Windows loader cannot locate libisl-23.dll when GCC tries to load it. This is not a compile-time issue—the headers are fine. It’s an execution issue.