You may experience the following error message when attempting to access the AD Self-Service Suite Admin when it is deployed to the same Web Site as SharePoint 2013:
1. Open Internet Information Services (IIS) Manager. In the Connections pane on the left hand side, expand the Server node and click on Application Pools. In the Application Pools pane, right click the ADSelfService application pool and click Advanced Settings.
2. In the Advanced Settings window that appears, under the (General) section, click on the drop down across from .NET Framework Version and change this setting to v4.0. Click OK when finished.
3. Reload the AD Self-Service Suite Admin and it should now load without giving an HTTP Error 500.19 message.
For more information on AD Self-Service Suite please see the documentation.
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