Configure PDF iFilter on 64 bit machines

The indexing of PDF’s at a client was not working. Together with a coworker (tnx Robbert Kloosterman) we fixed it by changing a registry value.


Round up:

1. install PDF iFilter for 64 bit

2. install the icon (easy fix: ttp://

3. start – run – regedit

4.  go  to “\\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\OfficeServer\12.0\Search\Applications\{site GUID}\Gather\Portal_Content\Extensions\ExtensionList

5. add a new string value (normally on nr.38) with the value PDF

6. go to \\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office
Server\12.0\Search\Setup\ContentIndexCommon\Filters\Extension\.pdf and change the value to {E8978DA6-047F-4E3D-9C78-CDBE46041603}

7. stop and start the spsearch

8. do a iisreset

9 do a full-crawl

Our problem was we were using another key that was used for 32bit machines.. but we fixed it 🙂


More info here:

About: Marijn

Marijn Somers (MVP) has over 14 years experience in the SharePoint world, starting out with SP2007. Over the years the focus has grown to Office 365, with a focus on collaboration and document management. He is a business consultant at Balestra and Principal Content Provider for "Mijn 365 Coach" that offers dutch employee video training. His main work tracks are around user adoption, training and coaching and governance. He is also not afraid to dig deeper in the technicalities with PowerShell, adaptive cards or custom formatting in lists and libraries. You can listen to him on the biweekly "Office 365 Distilled" podcast.

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