For legal support, contact the retailer or publisher (id Software / Bethesda). I’d be glad to help with installation tips, patches, or troubleshooting instead.
: If your serial code doesn't work, double-check that you've entered it correctly. Make sure there are no typos or incorrect characters. Serial Code Quake 4 Cd-key
Spend the $2.50 to buy Quake 4 on Steam or GOG. You get a guaranteed working serial code, instant access to the brutal single-player campaign, and legitimate access to the multiplayer wasteland. Your CD-key is your dog tag in the war against the Strogg—wear it legitimately. For legal support, contact the retailer or publisher
Some users bypass authentication errors by adding 127.0.0.1 q4master.idsoftware.com to their Windows hosts file , which redirects the check back to your own machine. Key Redemption and Availability For legal support