While they no longer "support" the software, Adobe agents can sometimes verify your previous purchase history.
These are almost always attempts to compromise your computer's security. If you'd like, I can help you: Find a of the best free vector software. Troubleshoot installation errors for older Adobe software. adobe illustrator cs4 serial number updated
The update was specifically for the serial number, which had been causing some issues for users in the past. Apparently, some users had been experiencing problems with their serial numbers being flagged as invalid, even though they were genuine. Adobe had taken notice of this issue and was releasing a patch to fix it. While they no longer "support" the software, Adobe