(the main application interface), not just the compression dialog.

Locate the 7-Zip icon on your desktop or Start Menu. If the interface is in a foreign language, look for an icon that looks like a blue and white striped box. Double-click to open it.

They scanned across the tabs until they hit the very last one on the right: the tab.

Changing the language in the File Manager does not always immediately update the right-click "context menu" in Windows Explorer.