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IIST-SI-000233: Modify warning and error messages

Warning and error messages displayed to clients must be modified to minimize the identity of the IIS 10.0 website, patches, loaded modules, and directory paths.
To check compliance with IIST-SI-000233, complete the following steps for each site hosted on the IIS 10.0 web server:
  1. Open the IIS 10.0 Manager.
  2. Click the site name.
  3. Double-click the
    Error Pages
    icon.
  4. Click each error message and then click
    Edit Feature
    in the
    Actions
    pane.
If any error message is not set to
Detailed errors for local requests and custom error pages for remote requests
, your application is not compliant.
If your application is not compliant, complete the following steps:
  1. Open the IIS 10.0 Manager.
  2. Click the site name.
  3. Double-click the
    Error Pages
    icon.
  4. Click each error message and then click
    Edit Feature
    in the
    Actions
    pane.
  5. Set each error message to
    Detailed errors for local requests and custom error pages for remote requests
    .