Cannot activate CS6 Design & Web Premium - it shows no internet while TLS 1.2 is enabled

[MatiHalek]

I'm struggling for the second week with trying to activate it my Adobe CS6 Design & Web Premium license on Windows Vista (I know that's old and unsupported OS, but for some reasons I have to install it on it).
It always shows no Internet connection, even though I have TLS 1.2 enabled in Internet options. Offline activation does not work because it is an "upgrade key", I also need to provide a license for the CS5 product, and there is no such option there. The key definitely works because it activates on Windows 11 (but I had to cancel because I need to install it on Vista). So I understand that there is no chance of successful activation in 2024?

[kglad]

adobe connection errors are common and are not related to whether you're connected to the internet.  they're related to connecting to adobe's secure servers.

if you have a non-current os, your default browser must support tls 1.2, https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html

to test your default browser's tls you can use , https://clienttest.ssllabs.com:8443/ssltest/viewMyClient.html

otherwise, confirm that you can connect to the secure adobe servers by reading, http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html

do you see both logos after clicking "link"?

if you can and still see a connection error try these steps, https://helpx.adobe.com/download-install/kb/common-network-connectivity-issues.html

if those all fail, white list the adobe network endpoints, https://helpx.adobe.com/enterprise/kb/network-endpoints.html

or, if you’re trying to activate a perpetual license, you can try offline activation by disconnecting your computer from the internet, starting activation and using https://aoes-stage.licensingstack.com/aoes/aoes/v1/imsauthstatus

[MatiHalek]

My default browser supports TLS 1.3, even old Internet Explorer 9 shows support for TLS 1.2 (however all cipher suites are marked "weak" or "insecure"). I see both logos when clicking link in given article. Offline activation would be the best in this situation, but unfortunately it doesn't work because this activation requires a key for an earlier version of CS5, this is an upgrade, and unfortunately it seems that offline activation doesn't understand this

[kglad]

do you have the previous version and serial number?

[MatiHalek]

Yes, I have serial number for previous version.

[kglad]

i'm not sure, but if you install and activate cs5 (offline), you may be able to install and activate your cs6 offline.

[MatiHalek]

Unfortunately, I don't have CS5 (it was probably Web Premium) installer, I only saved CS5 and CS6 serial key plus CS6 original installer.

[kglad]

you can download it from prodesigntools.com