Have you checked how much remains on your drive?
The "Rise of the Tomb Raider unable to open bigfile000.top" error is a common, yet frustrating issue that stops the game from launching, often displaying a crash reporter dialog immediately after starting. This error indicates that the game's engine cannot read, locate, or access its primary data containers, specifically the bigfile data files, which hold almost all game assets.
Modern antivirus software (especially Windows Defender’s ) can block game executables from reading files inside the game’s folder. This can manifest as a “Failed to open” or “Access denied” error, even when the file is perfectly intact. rise of the tomb raider unable to open bigfile000 top
Your antivirus (like Windows Defender) mistakenly flags the file as unsafe and blocks access.
If you want, I can give exact steps tailored to your platform (Steam or Epic) and OS—tell me which and whether you use mods. Have you checked how much remains on your drive
Restores necessary paging memory headroom to read large packages.
"The eyes that see are not the ones that look, But the ones that understand the code of the ancients." If you want, I can give exact steps
Your antivirus software can sometimes mistakenly flag and block the game from reading its files, as these large archives can appear suspicious. In some cases, users have reported that their antivirus software was actively blocking the game.
If your game is installed on an external hard drive, move it to an internal SSD to prevent file read speed errors.
Does the crash happen upon clicking launch, or during the intro loading screens ? Share public link