In cases where the file system itself is "dirty," a full uninstallation, followed by a manual deletion of the remaining folder structure, is the "nuclear option" that usually resolves the issue. Conclusion
This error typically appears in a dialog box with text similar to: bigfile000tiger tomb raider error
If verifying fails repeatedly, you can source a known-good copy of bigfile.000 . In cases where the file system itself is
Errors referencing (or other numbered .tiger files) in Tomb Raider " a full uninstallation
If standard verification fails, you can force Steam to replace the specific corrupted file.
The bigfile000.tiger error is almost always a case of using the wrong tool for the job. These are proprietary game