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Question "Bad CD Key" on joining Multiplayer matches (Dayz, PR and Normal OA matches)

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A few days ago I started to get this problem, I would try to join a server of DayZ for example, get into the lobby and then after about 20 seconds get an error message saying "Bad CD Key". Now I thought this would be a temporary problem, so I went and played on PR but I got the same error there, as with OA multiplayer matches as well. I have tried joining regular ARMA 2 matches and I can do that, so it seems to be a problem with OA, but I have looked for a solution for about two days now, and everything I have tried has failed to get it working again.

Please help if you can.

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Buy a legal version of ARMA 2 CO?

But in case you already have:

- if you have a steam version: verify you game cache

- if you have a retail version: delete and reïnstall

If this doesn't work; contact BI, since it's not really DayZ related.

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You need to install and launch them in order.

Install Arma 2.

Install Oa.

Launch Arma 2.

Launch OA.

Install DayZ.

Set it up properly.

Launch Combined Operations

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It is a legal version of the game, and I have it on steam, but I have verified the game cache and that does not work.

Also in response to Legacy, I have launched them in that order and I can get into the dayz lobbies but no matter what server I join I get "Bad CD key" error.

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Please, I really need help this error is completely stopping me play ARMA online, not just DayZ. I have tried the solutions in other threads but none have worked, if anyone can help please do.

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Yeah, I have this too. I have played PR for MONTHS and DayZ for weeks with no problem.

I played 12 hours ago and now I have a bad key? I have changed nothing. Tried reinstalling BattlEye. No luck.

I am running DayZ 1.7, latest Arma 2 beta patch, as Admin on Win7 x64.

For the snarky ones: Yes, I have bought and paid for everything.

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