If you prefer not to use a third-party installer, you can manually restore the classic calculator by extracting calc.exe and its associated .mui files from an old Windows 7 ISO or virtual machine disk image. This method requires more technical knowledge, such as creating specific subfolders for language files (e.g., en-US ), but avoids the need for external setup files. YouTube·Helton's Computer Repair How to bring back old Windows 7 Calculator on Windows 10
Right-click the classic icon and select Pin to Taskbar for one-click access. oldclassiccalc-2.0-setup.exe
Get-AppxPackage *windowscalculator* | Reset-AppxPackage If you prefer not to use a third-party