To help pinpoint the absolute best fix for your specific setup, could you let me know:

The game launcher may lack the necessary permissions to modify files on your drive.

The error often persists because the platform (Steam or Epic) automatically re-downloads the corrupted file from the cloud. : Right-click Shadow of the Tomb Raider in your Library. Select Properties > General . Toggle off Steam Cloud .

: If OneDrive is syncing your Documents folder, it may move your save files to the cloud and out of the game's local reach. Try pausing OneDrive or setting the SOTTR folder to "Always keep on this device". Verify Game Integrity Steam Verify Tool to ensure no core game files are corrupted. Xbox Console (Save Backups)

Now, delete the file from the original folder only (leave the SaveGameX.dat files).

Windows Controlled Folder Access is the leading cause of this error. It locks down the Documents folder, preventing the game from saving or reading your profile.

Locate the folder containing a string of numbers (your unique User ID).

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Open the folder labeled with a (your unique user ID).

C:\Users\[Your Username]\Documents\Shadow of the Tomb Raider\