Can you tell us what Application are you activating and what is the version.
If it is an Application of Creative Suite 6 family. Please try the following steps tio get the Request Code:
1. Launch the product after installation and go to the Serial Number Validation screen.
2. Click "Having trouble connecting to the Internet"
3. Click “Offline Activation”.
4. Click “Generate a Response Code”.
5. Write down the Request Code.
6. Go to an online computer, and navigate to www.adobe.com/go/getactivated
7. Click Offline Activation.
8. Sign in with your Adobe ID. In case you don’t not have one, you create the same from this screen.
9. Enter the request code you see on the product and click Generate.
10. Write down their Response code.
11. Go to the offline computer.
12. Enter the Response Code obtained from the website.
13. Click Activate.