Invalid CD key

[Sir Nicholas Altman]

Hello! I have friend who just bought MTW2 and kingdoms and he can't log on multiplayer battles cause he gets a massage "Invalid CD key". His game works normaly besides that.

How to fix that problem?

[Sir Nicholas Altman]

You're getting the error message:
"Login failed - invalid CD-key"

Right this is how to resolve (with thanks to various posters)
You cannot change the cd-key ingame anymore (most likely for the protection against illegal games), so you have to do other things.

Open Start
Click Run
Type: regedit
Now go to this: "HKEY_LOCAL_MACHINE/SOFTWARE/SEGA/Medieval II Total War"

Now you'll see a value representing the CD-key. Change it to what it should be. You could have done the following wrong:
-Don't type spaces
-Do type the "-"s
-Don't use "o"s use "0"s
-Type everything (except for the numbers obviously) in capital letters

Now it should work, if it doesn't let us now ... preferably in the MP part

[irishron]

Since you seem to answered your own question, thread closed.