HTTP Error 500.24 – Internal Server Error

This article replaces TK00114.


When you launch the Time & Expense portal, you receive the following error.

HTTP Error 500.24 - Internal Server Error
An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.
Most likely causes:
- system.web/identity@impersonate is set to true.


ASP.NET Impersonation authentication is enabled in IIS.


  1. Open the Internet Information Services (IIS) Manager.
  2. Under Connections, select the web site setup for Project Cost Web Suite.
  3. Double-click Authentication.
  4. Select ASP.NET Impersonation and click Disable.
  5. On the web site Home page, click Restart.