If you try to install CS3 from an original disc today, you will likely encounter an "Activation Unsuccessful" error. The software tries to "ping" a server that no longer exists, meaning your original serial number and the resulting authorization code won't validate through the traditional process. The Official Solution: The Activation-Free Version
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Users were required to uninstall their original CS3 version and install this new version using the provided installer and the new serial number. If you try to install CS3 from an
