IMPORTANT: Pharsight’s licensing procedures have changed and you must follow these instructions closely to ensure that you are successful in getting up and running.
The following process will walk you through the steps needed to get your software application(s) up and running with a Node license. These instructions apply to the following Pharsight desktop software applications:
(*If you are trying to activate a version of WinNonlin that is older than vsn. 5.1 and did not receive pre-5.1 instructions from Pharsight Fulfillment , please contact support and request the pre-5.1 instructions.)
All of Pharsight’s desktop products must acquire a license after they have been installed in order to be fully functional.
A node license activates the application software on the computer on which it is installed. The node license agreement restricts installation of the software and license to a single personal computer (PC) for each node license purchased. Once installed, node licenses can not be moved from one computer to another without contacting Pharsight’s support team.
<For a PDF of these instructions, click HERE>
Step 1: Make sure you have an Authorization Code from Pharsight’s fulfillment team Note: An Authorization Code is NOT a license. The authorization code grants you (the end user) the ability to obtain a license for a specific computer.
Step 2: Log in as a System Administrator or and equivalent user profile.
Step 3: Install the Pharsight application software on the node computer where it will be used. A link to the software is included in an email from Pharsight fulfillment and /or the software can always be downloaded from the Pharsight’s download portal using your login credentials on the Pharsight Support site: http://pharsight.com/support/support_home.php .
Step 4: Download the software application “wechoid.exe” from the following location: ftp://support_ftp:pt9JTmD9GdXQLtCgPkvL@ftp.certara.com/support/desktop/Licensing/wechoid.exe
Step 5: On the node computer where the Pharsight application software is installed, run the wechoid.exe application (called Echo ID) by double-clicking the file.
A. Select the ‘Old Style’ radio button.
B. Check ONLY the box for DiskID and uncheck everything else.
C. Copy text from the Code textbox for use in the following steps. This code will always be the same for the computer on which it was generated.
Step 6: Make sure the Pharsight application to be licensed is not running.
Step 1. On any computer with internet access, launch a web browser and navigate to the following website: http://licensing.pharsight.com/LicenseRequestPage/default.aspx
Step 2. Enter the Authorization Code you received from Pharsight into the Authorization Code textbox on the web page.
Step 3. Paste or enter the Code from wechoid.exe (from step 2 above) into the Locking Code textbox on the web page.
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Step 4. Click the Request License button and a license code will appear in License Code textbox.
Step 5. Copy or record the License Code on the web page for transfer back to the computer where the Pharsight application software is installed (write it down, save it to a network drive, save it on USB memory stick, etc…).
Step 6. Use the Pharsight Licensing Wizard to install the new license. From the Windows Start menu, select Programs| Pharsight | [Product (e.g.: WinNonlin 5.3)] | Pharsight License Wizard. This opens the Pharsight Licensing Wizard.

Step 7. Click the Node License button. This opens the following dialog. Any previously
installed WinNonlin license key code will be detected and pre-filled in the License Key Code field.

Step 8. Enter the user information (optional). This information will be saved in the license key file, LSERVRC, on your local hard drive which you may use to provide Pharsight with information for license renewals and customer support.
Step 9. Paste or enter the License Code from the website into the “License Key Code” box AND the “Product Tracking ID” box. (The Product Tracking ID was contained in the email from Pharsight Fulfillment). (Note: The product tracking ID and license keycode will be needed for future correspondence with Pharsight regarding the software or license. Note: Do NOT attempt to paste the Authorization Code into the License Key Code field. It will result in an error.
Step 10. Click the "Install License Key" button to save the information to the license key file.
Step 11. Click Exit to close the Pharsight Licensing Wizard. It is now possible to run WinNonlin for the term of the license.
Step 12. Start the Pharsight application software by going to Start | Programs | Pharsight | [Pharsight Product (e.g.: WinNonlin 5.3].
If the previous to option failed, you can receive a License Key Code from Pharsight Fulfillment. Before contacting Pharsight, please take the following steps:
Step 1. Contact Pharsight’s Licensing Support at (1-650-314-3850 (US/EU/India)) or email (licensing@pharsight.com).
Step 2. Provide Pharsight with the code from wechoid.exe (from step 5c in Setup above) and the Authorization Code.
Step 3. Pharsight will contact you back by phone and/or email with a License Key Code.
Step 4. Upon receipt of License Code from Pharsight, return to the Pharsight Licensing Wizard to install the new license:
Step 5. Click Exit to close the Pharsight Licensing Wizard. It is now possible to run the product for the term of the license.
Step 6. Start the Pharsight application software by going to Start | Programs | Pharsight | [Pharsight Product (e.g.: WinNonlin 5.3].
Note: The product tracking ID and license key code will be needed for future correspondence with Pharsight regarding the software or license. To view it, re-open the Pharsight Licensing Wizard and click on the “View Any Previously Installed License Key(s)” button (these codes can also be copied and pasted into email correspondence). Alternately, e-mail the license file, LSERVRC (contained in the WinNonlin installation directory) with the service request to support@pharsight.com for technical support or to sales@pharsight.com for license renewals or product upgrades.
Note: there is a know issue with older versions of Pharsight desktop software when Clicking the “View any Previously Installed License Key(s)” button. The text that is associated with the most recent Key Code installed may state that that code is invalid – it is not invalid. This error is the result of version incompatibilities between the license decode utility and the current version of key codes that Pharsight generates. and will not affect the use of the software in any way. The software will work normally in spite of this error code.