Since the latest patch, I always receive the message that my serial code is invalid when try to join the Multiplayer. I need then to reenter my key by using the edit function in game. Then it works again and I can login and play. However, after exiting the game and restarting it, the error appears again, telling me my serial code is invalid. Then I reenter it again and can join...

Although there is a way for me to join after reentering the key, this is quite annoying! I already tried to reenter the key, login, go back to Singlelplayer and back again to Multiplayer. In this case, I do not have to reenter the key and I can logon immediately. But after exiting the game and restarting it, it starts over again.

Please, Crytek, have a look at this and let us know if there is any workaround or if you need to apply another patch.

Oh Wow.. Cannot believe I am the only one with that issue..

Or is it just the frequent spam here in the forums pushing it to site 2? Oo

I have the same problem. When I try to login to multiplayer (which worked fine yesterday) it gives me the incorrect serial message.

The lame part is that before the multiplayer then single then blah blah to get it to store your serial fix I was carrying my lap top to my friends house a few times and was keeping the manual with the serial on it in my packback, somewhere,somehow, I lost it...GG

Anyone know where the crysis 2 serial is in the vista registry? I have looked all through local machine and users...

Anyone know where the crysis 2 serial is in the vista registry? I have looked all through local machine and users...


1) Press “Start” + “R” keys to launch the Run window.
2) In the Run box, type “regedit” and hit Enter.
3) A large window will open, divided into two columns. In the left side, each element has a white arrow next to its name. By clicking on that arrow, you will make the element expand. Do this for “HKEY_LOCAL_MACHINE”.
4) Now expand “SOFTWARE” as well.
5) From the long list, find “Electronic Arts” or “EA” and expand it.
6) You should see Crysis 2 right below. Double-click on its name and a small list will open in the right panel.
7) All these entries are registries. Locate the one entitled “CD KEY”, “CODE” or “erdc” and double-click on it. The Crysis 2 serial number should pop right away.

You can try what Tuskan said. I didn't do that and mine worked after typing it in the third time. His method sounds like a foolproof one since you're going into the reg, though.

I have tried that...it is not there. There is no EA entry. There is an EA entry somewhere in a component directory with some box art stuff..also there are three different crytek entries, none have anything more serialish than the product id. :/

steam version?

no, it isnt the steam version.

It is just a retail limited edition version from wal-mart.

I bought my game from amazon.com got this problem to i played to level 10 now its say Invalid serial error like you.

A really great start for Crysis 2 *sigh*

@tuskan: Thanks for this. When I am back home from work today I will check the serial in the registry to see if there is something wrong. However, I always double checked my serial when I typed it in so I don′t think that this will solve the issue for me.

I also opened a ticket with the Crytek Support for this issue. If I receive a reply I will let you know here..

Same problem since last patch. MP key doesn′t work anymore. And this "going back to sp and then reenter key"- solution doesn′t work for me. And the best is that i can′t wright a message to crytek support, cause this also doesn′t work.
Very, very, very bad.

Hi guys,

If you're getting an invalid CD key issue please try re-entering your key:

---

---

---

---

---

---

---

---

---

---

---

---

---

Next Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending

---

Return to Crysis

Jump to: Select a forum ------------------ The Elder Scrolls    V - Skyrim    IV - Oblivion    III - Morrowind    The Elder Scrolls Series Discussion Fallout    Fallout 4    Fallout: New Vegas    Fallout 3    Fallout Series Discussion Crysis Othor Games