Answered

Perpetual CS5.5 License – Activation Refused After Server Changes

Forum|Forum|7 months ago
November 24, 2025
7 replies
2100 views

Hello,
I am asking for help with a perpetual Adobe Creative Suite 5.5 license (purchased in 2012) that I can no longer activate.

I still have:

- the original Certificate of Authenticity,

- my original serial number,

- the original invoice from the reseller,

and the software was successfully used in the past.

Adobe Support informed me that my reseller “is not on the current list of official distributors”. However, the purchase was made 12 years ago, the reseller no longer exists today, and activation fails only because Adobe’s activation servers for CS products were discontinued.

I kindly ask for review from the Licensing Specialist team or for the case to be escalated.
This is not a subscription issue – I only need help with activating a legitimate perpetual license that Adobe’s server shutdown rendered inactive.

Is it possible to have the serial number checked manually or to receive an offline activation exception?

Thank you very much.

Activation

Correct answer veko22

Hello, I am happy to announce that the problem has been solved. It turns out that it was a pretty minor issue after all. After restoring the serial number and reinstalling, I still couldn't verify the serial number in individual applications. It kept trying to connect to some servers that apparently no longer exist. Using AI, I tried a simple trick: deleting the cache file in commonfiles in Windows. This allowed me to verify the serial number for one product, and now it works for all of them.
It's possible that my whole problem was just this nonsense. For anyone dealing with a similar issue, I would recommend this as the first step if you are unable to verify the serial number after installation.
Thanks to everyone involved for their help.

V

veko22AuthorCorrect answer

Hello, I am happy to announce that the problem has been solved. It turns out that it was a pretty minor issue after all. After restoring the serial number and reinstalling, I still couldn't verify the serial number in individual applications. It kept trying to connect to some servers that apparently no longer exist. Using AI, I tried a simple trick: deleting the cache file in commonfiles in Windows. This allowed me to verify the serial number for one product, and now it works for all of them.
It's possible that my whole problem was just this nonsense. For anyone dealing with a similar issue, I would recommend this as the first step if you are unable to verify the serial number after installation.
Thanks to everyone involved for their help.

kglad

Community Expert

glad you got it resolved, but it's unlikely to help anyone because it's not clear what you mean by "restoring the serial number".

T

trogi@troppo

I have the exact same problem: I wanted to reactivate Photoshop CS6 on my older laptop, which has been installed there for years, and Adobe is also rejecting it. However, InDesign CS6 is still running from the same installation. Of course, it was officially purchased as a package. I find this unacceptable.

kglad

Community Expert

@trogi@troppo

copy and paste here a screenshot of the message you see when trying to activate.

T

trogi@troppo

Cra-zy! For the screenshot, I tried to reproduce the problem, and suddenly—unlike before—I get a dialog box asking me to enter the serial number. I enter my serial number, and everything works! Problem solved!

V

veko22Author

I have an open support ticket where they keep telling me that my seller is not trustworthy to them—they don't have him in their database. They keep offering me a subscription upgrade. He used to be trustworthy to them, and I did everything I could to legally obtain a product worth over $1,000. I would never buy anything so expensive from someone untrustworthy. This whole problem and their approach give me the impression that they just want to make money off me and are ignoring the law. I bought a lifetime license, officially, I have the documents to prove it. The fact that someone is not in their database now is not my problem. Let them show me the database from 2012, when I bought the product.

kglad

Community Expert

if you saw an invalid serial number you either made an error when entering the number OR you have the wrong installer. details:

assuming you're using a valid adobe serial number (6 groups of 4 numbers), you have a mismatch between your installation file and serial number. ie, you can have a valid serial number, but if it's for program A and your installation file is for program B, you will see an invalid serial number message.

common mismatches are language/region (eg, serial number is for western europe and installation file is eastern europe), platform (eg, serial number is for a mac and installation file is win), license type (eg, education vs enterprise vs individual). and one of the most common is using a program installation file with a suite's serial number. eg, using a cs6 suite serial number with a photoshop cs6 installation file. that won't work even though photoshop is included in that suite.

you must use the (correct) suite's installation file (and you can choose to only install one program from the suite). here's official info about that error, http://helpx.adobe.com/creative-suite/kb/error-serial-number-valid-product.html

kglad

Community Expert

what problem are you seeing when trying to activate?

V

veko22Author

Invalid serial number. Installation succesfull.

Few years ago was serial number ok.

V

veko22Author

I have now downloaded my product from my Adobe account, as you recommended. I tried reinstalling it using the serial number assigned to the product (both in my Adobe account and on the certificate). Now, during installation, it says that this serial number does not match the product. I also went through the online serial number validation wizard, and it said my number was invalid.

Nancy OShea

Community Expert

CS5 is 15-year-old, unsupported software. Nobody can help you recover a revoked license. Sorry.

MODERN OPTIONS:
==============
FREE Acrobat Reader
https://www.adobe.com/acrobat/pdf-reader.html

FREE Online PDF Editor
https://www.adobe.com/acrobat/online/pdf-editor.html\

Paid Acrobat (Standard, Pro or Studio)
https://www.adobe.com/acrobat/pricing/compare-versions.html

Photoshop Elements or Premiere Elements (3 year license).
https://www.adobe.com/products/photoshop-elements.html

Creative Cloud Annual Photography plan.
https://www.adobe.com/creativecloud/photography.html

FREE or Paid Adobe Express
https://helpx.adobe.com/express/using/express-overview.html

Creative Cloud Bundles & Single Apps for mobile, web & desktops
https://www.adobe.com/creativecloud/plans.html

Good luck.

Nancy O'Shea— Product User & Community Expert

V

veko22Author

I dont agree. I bought it in 2012 and spent a lot of money for that. I bought a permanet licence and I have right to use it forever. Nobody can cancel my validations just for fun. I dont need support, installation is gping well. I just need to validate my serial.

Peru Bob

Community Expert

Did you deactivate it on the old computer(s)?

If you are getting an error message, what does it say?

V

veko22Author

Its still running on my old computer. Installation goes excellent, just when runn any software of the suite, the system want my serial number (which was ok just few years ago). And when I put my official bought seriak number, it checks it as invalid.

kglad

Community Expert

the installation file and serial number don't match.

Peru Bob

Community Expert

See if this helps:

https://helpx.adobe.com/download-install/apps/troubleshoot/licensing-activation-issues/cant-activate-reinstall-legacy-apps.html

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