How are IFilters licensed?

All our IFilters are licensed per machine. We offer volume discounts and Enterprise licenses. For more information please contact us directly.

What is Server Edition?

Server Edition of IFilter is a server-side solution designed for businesses of all sizes. It integrates with Internet Information Server, SharePoint Portal Server, WSS, Site Server, Exchange, SQL Server and all other products based on Microsoft Search technology. IFilter Server Edition also includes all the functionality of the Workstation Edition.

What is Workstation Edition?

IFilter Workstation Edition makes it possible for end users to search documents on their desktops. It can be installed on Windows desktop operating systems and seamlessly integrates with MSN Desktop Search, Indexing Service and Windows File Search. For more information on how to use our IFilters with Windows File Search please refer to  "Using IFilterShop products on Windows desktop OS" whitepaper.

We want to use IFilters with IIS. Do we need to purchase a license for each client accessing IIS?

You will need one Server Edition license per server

What license do I need for SharePoint Portal Server? Do we need to purchase a license for each client?

You will need one Server Edition license per server.


Are IFilters compatible with SharePoint 2003?

Yes, SharePoint Portal Server 2003 is fully supported.

Are IFilters compatible with WSS?

Windows SharePoint Services itself does not provide full text search functionality out of the box. It can be enabled through integration with SQL Server or SharePoint Portal Server. Both these products are fully supported by our IFilters.

I am using your IFilter product with Indexing Service. I can search for document title and author, but when I search custom properties I receive "Column '...' has not been defined. SQLSTATE=42S22 error". When I query custom property via Indexing Service Management Console I get "No such property" error.

For better integration with Indexing Service our IFilters map basic document properties such as "Title", "Author", "Subject", etc. to standard Indexing Service properties DocTitle, DocAuthor, DocSubject, etc. These mapped properties can be queried right away. The complete list of mapped document properties can be found in "Property Mappings" section of README file that comes with each IFilter product. To query other document specific properties you will need to setup so called Friendly Names for them first. Please refer to "How to setup Friendly Names in Indexing Service" whitepaper for more information.

Are your IFilter products compatible with Windows Vista and Windows Desktop Search?

All our IFilters can be configured to work with Windows Vista Search and Windows Desktop Search. You will need to configure custom temporary directory for each IFilter as described below:

  1. Stop Vista Windows Search or Windows Desktop Search.
  2. Open registry key "HKEY_LOCAL_MACHINE\SOFTWARE\IFilterShop"
  3. Open registry subkey related to the particular IFilter product
  4. Add new String value named "TempPath" and enter the full path to the new temporary directory.
  5. Start Vista Windows Search or Windows Desktop Search.
All IFilters can share the same temporary directory. Please note that when using custom temporary directory, we recommend that you set it as "not indexable" in all your indexing products. Otherwise temporary files may be indexed. This will pollute the index and also can prevent temporary files from proper removal by an IFilter.


Normally our IFilters install and work transparently, without any need for further configuration. If you are experiencing difficulties, try the steps below: