File Content Extraction 26.2
Viewing SDK Programming Guide

# License Information

Your license key controls whether you have the full version of the File Content Extraction SDK, or a trial version. It also determines whether the following advanced features are enabled:

- Advanced character set detection with the character set detection library (`kvlangdetect`).

- Advanced document readers:

  - Microsoft Outlook Personal Folders (PST) readers (`pstsr` and `pstxsr`)

  - Lotus Notes database (NSF) reader (`nsfsr`)

  - Mailbox (MBX) reader (`mbxsr`)

- Processing of documents protected by Microsoft RMS encryption.

If you obtain a new license key from OpenText, you must update the licensing information that you pass to File Content Extraction. See Pass License Information to File Content Extraction.

## Enable Advanced Document Readers

Advanced readers require an appropriate license key.

To enable the MBX reader in an existing installation of Viewing SDK, in addition to updating the license key, you must also follow these steps:

If you are using the registry file:

1. Open the `install.reg.txt` in a text editor. The file is installed in the `install\redist` directory, where `install` is the directory in which you installed Viewing SDK.
2. Under the key `[HKEY_LOCAL_MACHINE\Software\Verity\Viewing SDK\KVMAILVE]`, change the parameter `"233"="emlsr.dll"` to `"233"="mbxsr.dll"`.
3. Save the file as `install.reg` and import the file into your Windows system registry.

If you are using the `kvsdk.ini` file:

1. Open the `kvsdk.ini` file with a text editor. The file is installed in the root of the Windows directory.
2. In the `[KVMAILVE]` section, change the parameter `233=emlsr.dll` to `233=mbxsr.dll`.

## Pass License Information to File Content Extraction

You must provide your license information to File Content Extraction through the API.

If you have an evaluation version of File Content Extraction and purchase a full version of the SDK, or you are adding a document reader (for example, the PST reader), you must update the license information that you pass in.

To provide license information using the Viewing API

- After creating the VAPI window using `CreateWindow()` or `CreateWindowEx()`, send the VAPIMWP_INIT_SETLICENSE message, where `YOUR_KEYVIEW_LICENSE` is the license key provided by OpenText. For example:

      SendMessage(hWndVAPI, VAPIM_INIT, VAPIMWP_INIT_SETLICENSE, (LPARAM)"YOUR_KEYVIEW_LICENSE");

To provide license information using the ActiveX control

- Set the `License` property of the control to the license key that was provided by OpenText. For example:

      AxKEYview1.License = "YOUR_KEYVIEW_LICENSE"

Copyright 2016-2026 Open Text
Version 26.2 | Last updated April 2026

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Product: File Content Extraction 26.2

Topic Title: License Information