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Version: v4 (Stable)

Blank Page

When browsing AlertWeb hosted on IIS, you may encounter one of the following symptoms:

  • An HTTP 500 Internal Server Error
  • A blank page displayed in the browser

Both issues are caused by a missing or misconfigured StaticFileModule in IIS.

Cause 1: StaticFileModule not installed​

IIS does not have the Static Content role service installed.

Resolution on Windows Server​

  1. Open Server Manager and expand Roles.
  2. Right-click Web Server (IIS) and select Add Role Services.
  3. Under Web Server → Common HTTP Features, check Static Content.
  4. Complete the installation.

Resolution on Windows Vista / Windows 7​

  1. Go to Control Panel → Programs and Features.
  2. Click Turn Windows features on or off.
  3. Expand Internet Information Services → World Wide Web Services → Common HTTP Features.
  4. Enable Static Content and confirm.

Cause 2: StaticFileModule missing from StaticFileHandler​

The error message reads: "The StaticFileHandler is missing StaticFileModule from its module list."

Resolution​

  1. Open IIS Manager (inetmgr).

  2. Expand the server name and select the web site.

  3. In the Features View, open Handler Mappings.

  4. Right-click the StaticFile handler and select Edit.

  5. In the Module field, ensure the following modules are listed:

    StaticFileModule, DefaultDocumentModule, DirectoryListingModule