Fixing the 'An Error Occurred While Updating Counter-Strike 2' Issue

Solution 1: Run Steam as Administrator

Close Steam completely. Right-click the Steam shortcut and select "Run as administrator."

Solution 2: Fresh Installation

Uninstall the game from your Steam library, then reinstall CS2 while running Steam with administrator privileges.

Solution 3: Change Your Steam Download Region

Access Steam settings > Downloads tab > select a different region. Restart Steam and retry.

Solution 4: Clear Steam's Download Cache

Steam > Settings > Downloads > Clear Download Cache. Log back in and attempt the update.

Solution 5: Contact Steam Support

If none of the above work, contact Steam Support with details of steps already attempted.