"HTTP Error 500.19 - Internal Server Error
The request page cannot be accessed because the related configuration data for the page is invalid."
Detailed Error Information may include: "Config Error Cannot read configuration file due to insufficient permissions"
"Internal Server Error
ExecuteReader requires an open and available Connection. The connection's current statue is Closed."
Permissions are insufficient on the following file(s):
Versions 5.6, 5.7: C:\Program Files\Quest Software\Defender\Defender Web\WWW\Web.config
Versions 5.8.1, 5.8.2: C:\Program Files\Dell\Defender\Management Portal\WWW\Web.config
Verify that the "Users" group has 'Read' and 'Read & execute' permissions on the appropriate file:
Add the service account to local admins group on the system running the Management portal.