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Home > Success Center > Orion Platform > Orion - Knowledgebase Articles > HTTP 500 Error with a new NPM installation and database

HTTP 500 Error with a new NPM installation and database

Created by Perry Ginno Casio, last modified by Melanie Boyd on May 15, 2018

Views: 113 Votes: 0 Revisions: 4

Updated May 15, 2018


An HTTP 500 error was returned with a new NPM and Orion Platform installation and a new database deployment. 


  • Orion Platform, all versions


  • Corrupted IIS configuration
  • Anti-virus software


  1. Uninstall Web Server IIS via Server Manager under Server Roles.

    For information about a clean uninstallation of IIS and WAS, see:

    (© 2017 Microsoft, available at, obtained on May 15, 2018)

  2. Uninstall Windows Process Activation Service via Server Manager under Features.
  3. Reboot the server.
  4. Go to C:\Windows\System32\inetsrv and cut the inetsrv folder and paste it to desktop for backup.
  5. Install Web Server IIS and Windows Process Activation Service again. This recreates the inetsrv folder.
  6. Stop or Disable all anti-virus services.
  7. Re-run the Configuration Wizard as Admin.



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