| Criteria | Legitimate file | Potential Malware | | :--- | :--- | :--- | | | C:\ProgramData\Ubisoft\Launcher\cache\ | Desktop, Downloads, C:\Windows\System32 | | Digital Signature | Signed by "Ubisoft" | Unsigned or fake signature | | Process using it | UbisoftConnect.exe or Uplay.exe | Unknown .exe with random name | | Behavior | Only runs when launcher is open | Runs at startup, high CPU, network activity |
| Launcher | Cache File(s) | Purpose | | :--- | :--- | :--- | | | appcache\*.bin | Depot download cache | | Epic Games | webcache\*.bin | Launcher UI and manifest cache | | Battle.net | Cache\*.index | Game repair and patch buffers | | Ubisoft | gfpakhashcache.bin | PAK file hash integrity |
At first glance, it looks like system-generated gibberish. Is it a virus? Is it a crucial part of Windows? Or can you simply delete it to free up space? gfpakhashcache.bin
Never use a third-party "cleaner" tool that promises to remove gfpakhashcache.bin permanently. Such tools often corrupt the Ubisoft Connect installation. Stick to the manual methods described above. Have more questions about mysterious cache files on your gaming PC? Check your other launchers—Steam, Origin, and GOG all have similar hidden .bin files doing the same work behind the scenes.
If you’ve been digging through your temporary files, running a disk cleanup utility, or searching for large, mysterious files taking up space on your Windows PC, you might have stumbled upon a file named gfpakhashcache.bin . | Criteria | Legitimate file | Potential Malware
However, malware authors sometimes use similar naming conventions to hide in plain sight. Here is how to verify:
| Question | Answer | | :--- | :--- | | | Yes, if signed by Ubisoft. | | Can I delete it? | Yes, but it will come back. | | Does it slow my PC? | Only during game verification/updates. | | Should I be worried? | No. It’s standard for Ubisoft games. | | Best long-term solution | Uninstall Ubisoft games you no longer play. | The Bottom Line gfpakhashcache.bin is not a virus, not a Windows error, and not something to lose sleep over. It is a performance optimization file for Ubisoft’s game launcher. If you are low on disk space, delete it freely—Ubisoft Connect will simply rebuild it. Or can you simply delete it to free up space
When you download a large game (e.g., 80GB), the launcher splits the game into many small "packages" (PAK files). Each package has a unique hash—a digital fingerprint.
