To create a file, you generally need to use an archiving tool like WinRAR or PeaZip , as Windows doesn't natively support creating RAR archives (it only supports creating ZIP files). How to Create a RAR File (Using WinRAR)

Click "Set password..." if you want to encrypt the file. Finalize: Click OK to begin the compression process.

Right-click the selected files and choose "Add to archive..." from the context menu. Configure Settings: Archive Format: Ensure RAR is selected.