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Originally Posted by V1ceC1ty I highly doubt they're running out of keys. "XXXX-XXXXX-XXXXX-XXXXX-XXXXX" is the format of the key. I'm not 100% sure how to work out how many keys you can get out of that but I'm pretty sure it's over a few billion. Failing to contact the key server can mean they're having troubles with the servers or your computer can not connect to it.

The combination of the keys is not the problem. Steam did not buy enough game licenses keys to accommodate all of the purchases. They need to buy the keys from BiStudio.