The Indexing Service no longer indexes 2007 Office documents after you install the Microsoft Filter Pack for 2007 Office

You install the Microsoft Filter Pack for 2007 Microsoft Office on a Windows Server 2003-based computer. The computer is running the Indexing Service. After you do this, you notice that the Indexing Service no longer indexes 2007 Office documents.

This issue occurs because the Offfiltx.dll file is not registered with Index Server.

To resolve this issue, follow these steps:

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1. Open Registry Editor.
2. Locate and then click the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ContentIndex
3. In the details pane, locate and double-click DLLsToRegister.
4. In the Value data box, type Drive:\Program Files\Common Files\Microsoft Shared\Filters\offfiltx.dll as the last value in the box, and then click OK.
   
   Note Drive represents the disk partition in which you have installed the Microsoft Filter Pack.
5. Close Registry Editor.
6. Restart the Indexing Service.
7. Run a full rescan on indexed folders.