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Fallout 3 Save File Location

Quick answer: On PC, Fallout 3 save files are stored in %USERPROFILE%\Documents\My Games\Fallout3\Saves. Copy that folder to back up your progress before modding or moving to a new PC.

Here's exactly where Fallout 3 keeps your saves on PC, how to open the folder, and how to back them up.

Save file locations

Windows (Steam / GOG)
%USERPROFILE%\Documents\My Games\Fallout3\Saves

Full path: C:\Users\<YourName>\Documents\My Games\Fallout3\Saves\ . Save files use the .fos extension.

Cloud saves

Fallout 3 does not sync saves through Steam Cloud, so the .fos files stay only on your PC. Copy the Saves folder to a safe place before reinstalling or moving machines.

How to open the save folder

  1. Press Win + R to open the Run box.
  2. Type %userprofile%\Documents and press Enter.
  3. Open My Games > Fallout3 > Saves.
  4. Copy the whole save folder somewhere safe before editing, modding, or moving PCs.

Save problems & fixes

Fallout 3 save won’t load or says it’s corrupt

Many games keep an automatic backup next to the save (a .bak or numbered copy) — close the game, copy that backup over the broken file, and reopen. On Steam, also right-click the game → Properties → Installed Files → Verify integrity of game files.

My Fallout 3 save is missing or the folder is empty

You are usually looking in the wrong sub-folder — open the numbered profile/Steam-ID folder inside the path above, not the parent. If it is still empty, cloud sync may not have finished before the game overwrote the local copy; reconnect and let the cloud sync complete before launching.

Fallout 3 progress rolled back after a cloud conflict

When Steam or the console reports a save conflict, always keep the version with the LATER timestamp. Choosing the older cloud copy overwrites newer local progress — the most common cause of “lost hours.” If unsure, disable cloud sync, back up the local folder first, then re-enable it.

FAQ

Where is the Fallout 3 save file on PC?

It's at C:\Users\<YourName>\Documents\My Games\Fallout3\Saves. Press Win+R, type %userprofile%\Documents, then open My Games\Fallout3\Saves. Files end in .fos.

Why can't I find the Fallout3 folder in My Games?

The folder is only created after you launch the game and make your first save. Start a new game and save once, then check again.

How do I back up my Fallout 3 saves?

Copy the .fos files from the Saves folder to a USB drive or another folder, then paste them back to restore.

Other games

Need another game or a quick backup? Use the Save Location Finder — pick any game to get its exact save path plus a ready-to-run backup command.