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Participant
February 8, 2021
Question

Product Key saying invalid for CS4

  • February 8, 2021
  • 2 replies
  • 290 views

I purchased Adobe CS4 many years ago and am trying to install it on my new computer. Now when I get to the product key part of installation it is telling me I have an "invalid product key". I am 100% sure this is the correct product key as it was previously installed on my old computer. Can someone explain why this is happening now?

 

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2 replies

Nancy OShea
Community Expert
Community Expert
February 8, 2021

Did you check your Adobe account to ensure you have the correct serial number for that product?

https://account.adobe.com/products

Was CS4 an upgrade?  I ask because if it was, you'll probably need the qualifying product's serial number.

 

 

Nancy O'Shea— Product User & Community Expert
Participant
February 9, 2021

I believe it is the correct serial number since I am installing off of a disc, not an upgrade. I purchased it as an extenson of the 30-day trial about 10 years ago. 

John T Smith
Community Expert
Community Expert
February 8, 2021
Participant
February 9, 2021

Hmm I will see if I can get the old laptop up and running and deactivate it. I didn't know it was limited to 2 activations so maybe that is it. Can't ever recall installing it on a second computer though, but seems the most likely scenario. I bought directly from Adobe and have the hard discs so I know it is reputable, just a very long time ago haha.