while installation, adobe accepts my key but when i have to enter my adobe id, it says "we cannot activate your subscription for adobe photoshop cs 5.1" ans says try again.
i have tried again and again but i am unable to do so.
You could be facing this issue because the software is unable to contact the Adobe servers. This could be due to several reasons: The time set on your computer may be incorrect, your computer might be behind a firewall. You'll find some details in the following document. Could you go through this document and let us know if you were able to resolve the issue. http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivat ion-products.html#id_78979