adobe master collection cs6 serial number validation

If you actually owned the product and could prove so with a sales receipt then Adobe might provide a new serial number, but with a story like you’re telling, where you don’t even have the computer anymore and it’s not associated with the AdobeID you can login to and give Adobe it could just be a made up story to get free software since all evidence of your legitimately having it is conveniently missing. If the serial number was just in a plaintext file it’d be too easy to hack. Adobe makes their licensing very complicated in an attempt to thwart pirates. It may be in the registry or in an encrypted file.

If you still had your laptop and it was a Windows computer, then there is a program you could have run to find the serial number, but without still having the computer with the software installed on it I don’t think you can find it, yourself. The easiest thing would be contact your friend, but maybe that is no longer possible. Your friend owns the product and you didn’t otherwise document what it was. If you have a disk image of the laptop then maybe, but otherwise, no.

I think you’re out of luck finding the serial number in a simple files backup.

Adobe master collection cs6 serial number validation