Finally, select the 'Always use the selected program to open SIG files' option and confirm the whole operation.Click 'Find more applications on this PC' and indicate the installation location of the appropriate program.Right click on the unknown SIG file you want to open.The second way is simpler and definitely recommended for less advanced users. This can be done in two ways - one is to manually edit the Windows Registry and HKEY_CLASSES_ROOT keys. If the user already has one of the applications installed, the next step will be to associate it with the file extension SIG. Associate Eudora with the SIG file extension
