Help please - Registration product code

[정림계34428634]

First, I am sorry for my poor English skills.

About four years ago, I bought Acrobat Reader 9.

Recently, I have replaced my laptop, therefore I tried to register - using the code I had.

But I couldn't register the code because already registered.

'The code you entered is invalid. Please try again.'.......

I want to I know how register the code.....

Respond to the request, please reply & E-mail.

[~graffiti · Accepted solution]

Adobe Reader was a free application and didn't require any "code" to install. Was it possibly Adobe Acrobat? If so, check your Adobe account and if you registered it, you can find the serial number there.