CS6 on Mac. Problems validating my serial number

[defaultscoehh3x5s7d]

I am hoping that someone can help me on this forum because Chat Support couldn't solve the problem. 

I tried to re-install CS6 Design standard from the DVD I bought years ago on an older Mac with OS 10.11.6

I did this because I need an older program that isn't supported anymore on the new versions that I normally use. 

When I launch Photoshop, the application manager is activated and tries to validate my serial number. Then I get a window saying that I must be online. So it thinks I'm offline but I am not.  The links in the window are going nowhere. 

I contacted Adobe and they sent me an email with instructions. I followed them all but with no result. 

- I have access tot the Adobe activation servers. A test was succesful.

- I ran the limited access repair tool but 0 files were reset. 

- I opened the host file manually but there was no Adobe related entry.

- I can access secure sites without any problem. 

- The global sign Root CA certificate is enabled and valid till 2028. 

I restarted my computer but all stays the same, with the window 'Make connection with the internet and try again (to validate the serial number)' popping up again. 

I hope someone has an answer to this. 

I would be very grateful!

[Nancy OShea]

Your system and browsers must support secure TLS 1.2 connections or you can't connect to Adobe's activation servers. See links below.

• https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html
• https://help.wheniwork.com/articles/enable-tls-v12-on-your-web-browser/

CS5 and CS6 are on life support. But AFAIK they can still be activated from macOS Sierra, High Sierra or Mojave.
https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

[defaultscoehh3x5s7d]

Hi Nancy,

Thanks for replying. 

I updated my OS to macOS Sierra but still have the same problem. 

I also ran the different steps from the mail again, but with no result. 

I always keep getting the same window as described earlier. 

Gerry

[defaultscoehh3x5s7d]

I gave it another try.

On my Mac I have now macOS Sierra 10.12.6 and Safari 12.1.2, freshly installed. 

I have downloaded two different (language) versions of CS6 from my account but couldn't install neither of them. Message on the screen is: Can not install. Maybe a file is missing. 

I tried a new install from my DVD (CS6 Design Standard, Education Edition) with serial number but the same window pops up (no connection with internet although I am online). 

When I now try the help function I get the two logos in the first step but can't get a 'pong' anymore. The pop-up says: 400 Bad Request. Request header or cookie too large. openresty. 

So I'm stuck again. 

[Test Screen Name]

CS6 wasn't made for Sierra. 

[defaultscoehh3x5s7d · Accepted solution]

A friendly assistant from the contact center helped me with an offline process to validate the serial number. It was rather complicated but succesful. 
Problem solved. 

[charlotteh5959044]

Hi I am having the same problem can I ask how you made contact with someone in the contact centre to help? I am not having much luck just being told to search forum etc

[Nancy OShea]

CS6 is discontinued & unsupported now.

Check your serial number or activation codes (for volume license holders) below.

https://account.adobe.com/products

https://helpx.adobe.com/x-productkb/policy-pricing/volume-licensing-site.html

Support can't help with anything CS6 related except an activation count reset.

CONTACT ADOBE SUPPORT:
================
Online Chat: https://helpx.adobe.com/contact.html?rghtup=autoOpen
Phone M-F, during normal business hours: https://helpx.adobe.com/contact/phone.html