Starfield has two PC storage models that should never be collapsed into one instruction. Standard PC/Steam saves are recognizable .sfs files, while the Microsoft Store/Xbox app build uses the Windows Gaming Services container. That distinction matters for backup, migration, and any future SaveEditor tool. If you use Steam, preserve the complete Starfield Saves directory and, when relevant, its Steam remote copy. If you use the Xbox app, preserve the WGS data first and do not rename opaque WGS files into .sfs files.
For this PC reference, the documented storage is Windows: Standard Windows: %USERPROFILE%DocumentsMy GamesStarfieldSaves
Steam remote copy: <Steam-folder>userdata<user-id>1716740remote
Microsoft Store: %LOCALAPPDATA%PackagesBethesdaSoftworks.ProjectGold_3275kfvn8vcwcSystemAppDatawgs<user-id> | Linux / Steam Play: Steam Play: <SteamLibrary-folder>/steamapps/compatdata/1716740/pfx/; Steam Cloud may also use the matching userdata/1716740 area.. The known file or folder pattern is *.sfs. The standard PC save files use the .sfs extension. Microsoft Store/Xbox app saves use the Windows Gaming Services (WGS) container instead of the same visible-file layout as the standard Documents save folder.
Backup guidance: For Steam/standard Windows, copy the full Saves folder. For Microsoft Store, back up the WGS container before attempting any extraction or storefront migration. Steam Cloud and Xbox Cloud are documented. The Documents folder may also be synchronized by OneDrive when Windows folder backup is enabled. Launcher and cloud context matters because Steam and Microsoft Store use materially different storage layouts. Treat WGS data as a separate container workflow instead of renaming files between storefronts.
Compatibility and recovery should stay conservative. A visible .sfs file from the standard PC layout is not the same thing as a Microsoft Store WGS container. Storefront conversion requires a purpose-built workflow rather than extension changes. If the expected progress is not visible, If expected saves are not in Documents, identify the storefront first. OneDrive folder redirection and WGS storage are common reasons the obvious path does not match the active copy. SaveEditor.com only labels a game-specific editor as available when a separate linked Tool has a verified operational runtime; this reference page by itself is not an editor claim.