If you use volume-licensed media to install Windows 7, you may face an error while activate product. The installation process uses a generic product key and Windows will be get installed without any product key. After that if you try to activate Windows 7, the activation wizard uses DNS to locate a Windows 7based host that is running the KMS software and activation wizard will queries DNS and does not find the DNS entry for the KMS host computer, hence the wizard shows error message(Error Code 0×8007232b ). According to Microsoft there are two solutions methods available for this issue. 

Method One:-Prepare a KMS Server

Configure a computer on the network to host the KMS software. Then, publish the Domain Name System (DNS) settings. For information setting up a KMS server and publishing the DNS addresses, visit the following Link.

 Microsoft Web site KMS server Setup Guide: 

Method 2: Use a Multiple Activation Key

Change the product key to a Multiple Activation Key (MAK). To do this, follow these steps:

1. Click Start, click All Programs, click Accessories, and then right-click Command Prompt.

2. Click Run as administrator.

   If you are prompted for an administrator password, type the password. If you are prompted for confirmation, click Continue.

3. At the command prompt, type the following command, and then press ENTER:

   slmgr -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

   Note In this command, xxxxx-xxxxx-xxxxx-xxxxx-xxxxx represents your MAK product key.

If you have any questions, post me comment !!

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