: Even with a genuine serial, you may face activation errors if you haven't deactivated the software from a previous machine first. Common Fixes for Licensing Errors already own

: The software will attempt to verify the license. If you encounter errors, ensure your "hosts" file is not blocking Adobe's activation servers by removing entries like 127.0.0.1 activate.adobe.com Important Considerations CS6 - Extended Serial Number - Adobe Community

If your Adobe Photoshop CS6 Extended trial has expired, you have better options than hunting for a dangerous “verified” serial number.