Redownloading a 60GB file should be your last resort, not your first. Try the following solutions in order. Solution #1 solves this error for 70% of users.
This is the simplest fix, but you’d be surprised how often it works. how to fix unarcdll returned an error code14 upd
But before you delete that 60GB file in a rage, know this: The issue is usually your antivirus, RAM, or Windows settings. How to Fix Unarc
Your C:\ drive is full, but your D:\ has space. The installer uses C:\Users\[Name]\AppData\Local\Temp regardless of where you install the game. Solution #1 solves this error for 70% of users
He ran Windows Memory Diagnostic to make sure a RAM stick wasn't actually dying. 🛡 Step 2: Disarming the Guards
Also disable your firewall and internet connection during the installation to prevent background updates from conflicting. 2. Verify File Integrity (Check Hashes) If your installer files (often labeled ) are even slightly corrupted, the extraction will fail. Microsoft Learn