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Home > Success Center > Web Help Desk (WHD) > WHD displays error 404 after upgrading to 12.4.0

WHD displays error 404 after upgrading to 12.4.0

Created by Maciej Klasa, last modified by Rodim Suarez on Mar 31, 2017

Views: 72 Votes: 1 Revisions: 6


After upgrading SolarWinds Web Help Desk from 12.1.0 to 12.4.0, the application may not start properly, generating error 404


WHD 12.4.0


  • The installation file was not unlocked properly. Microsoft® Windows® operating systems prevent programs downloaded from the Internet from changing any files in the Program Files directory. 
  • Web Help Desk cannot load specific .jar files, causing the application to crash. 


  1. Back up your Web Help Desk deployment.
  2. Locate your installation package.
  3. Right-click the package and select Unblock. 

    The package is ready to be installed in your Web Help Desk deployment. 

  4. Uninstall Web Help Desk.
  5. Restore the file to bring back the database configuration.
  6. Apply your new Web Help Desk license using offline activation.

    The online activation process will fail. 

  7. Install the Web Help Desk upgrade.
  8. Increase the RAM assigned to the Java server to 6GB.
  9. Change the default port from 8081 to 80.
  10. Restart Web Help Desk.
  11. Verify that Web Help desk is available using your URL. 

    Web Help Desk is installed in your deployment

See the Web Help Desk Getting Started Guide and WHD Upgrade Guide for more information.


Last modified
19:44, 30 Mar 2017