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HTTP Error 500.19 - internal server error when you open an IIS Webpage

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This article resolves a problem in which you receive an "HTTP 500.19" error message on a web application in Internet Information Services (IIS) 7.0 and later versions.

Original product version:   Internet Information Services 7.0 and later versions
Original KB number:   942055

To resolve this error, check the following sections for the appropriate error code information.

HRESULT code 0x8007000d

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x8007000d
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem occurs because the ApplicationHost.config or Web.config file contains a malformed or unidentified XML element. IIS can't identify the XML elements of the modules that are not installed. For example, IIS URL Rewrite module.

Resolution

Use one of the following methods:

  • Delete the malformed XML element from the ApplicationHost.config or Web.config file.
  • Check the unidentified XML elements, and then install the relevant IIS modules.

HRESULT code 0x80070021

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x80070021
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem can occur if the specified portion of the IIS configuration file is locked at a higher configuration level.

Resolution

Unlock the specified section, or don't use it at the higher level. For more information about configuration locking, see How to Use Locking in IIS 7.0 Configuration.

HRESULT code 0x80070005

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x80070005
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem occurs for one of the following reasons:

  • You're using IIS on a computer that is running Windows. Additionally, you configure the website to use Universal Naming Convention (UNC) pass-through authentication to access a remote UNC share.
  • The IIS_IUSRS group doesn't have the appropriate permissions for the ApplicationHost.config file, the Web.config file, or the virtual or application directories of IIS.

Resolution

Use one of the following methods:

  • Don't configure the website to use UNC pass-through authentication to access the remote UNC share. Instead, specify a user account that has the appropriate permissions to access the remote UNC share.

  • Grant the Read permission to the IIS_IUSRS group for the ApplicationHost.config or Web.config file. To do it, follow these steps:

    1. In Windows Explorer, locate the folder that contains the ApplicationHost.config file that is associated with the website, or locate the virtual directories or the application directories that contain the Web.config file that is associated with the website.

      Note

      The Web.config file may not be in the virtual directories or the application directories in IIS. Even in this situation, you have to follow these steps.

    2. Right-click the folder that contains the ApplicationHost.config file, or right-click the virtual or application directories that may contain the Web.config file.

    3. Select Properties.

    4. Select the Security tab, and then Select Edit.

    5. Select Add.

    6. In the Enter the object names to select box, type <computername>\IIS_IUSRS, select Check Names, and then select OK.

      Note

      <Computername> is a placeholder for the computer name.

    7. Select the Read check box, and then select OK.

    8. In the Properties dialog box for the folder, select OK.

      Note

      Make sure that the folder properties are inherited by the ApplicationHost.config and Web.config files so that IIS_IUSRS has the Read permission for those files.

HRESULT code 0x800700b7

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x800700b7
Description of HResult
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem may occur if there's a duplicate entry for the specified configuration section setting at a higher level in the configuration hierarchy (for example, ApplicationHost.config or Web.config file in a parent site or folder). The error message itself points out the location of the duplicate entries.

Resolution

Examine the specified configuration file, and compare it with its parent ApplicationHost.config or Web.config file to check for duplicate entries, as suggested by the error message. Either remove the duplicate entry, or make the entry unique. For example, this problem may occur because the ApplicationHost.config file has a duplicate entry for the following code:

<add accessType="Allow" users="*" />

To resolve this problem, delete the duplicate entry in the ApplicationHost.config file for the authorization rule. To do it, follow these steps:

  1. Select Start, type Notepad in the Start Search box, right-click Notepad, and then select Run as administrator.

    Note

    If you're prompted for an administrator password or for a confirmation, type the password, or select Continue.

  2. On the File menu, select Open, type %windir%\System32\inetsrv\config\applicationHost.config in the File name box, and then select Open.

  3. In the ApplicationHost.config file, delete the duplicate entry that resembles the following code:

    <add accessType="Allow" users="*" />

HRESULT code 0x8007007e

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x8007007e
Description of HResult
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem occurs because the ApplicationHost.config or Web.config file references a module or a DLL that is invalid or doesn't exist.

Resolution

In the ApplicationHost.config or Web.config file, locate the module reference or the DLL reference that is invalid, and then fix the reference. To determine which module reference is incorrect, enable Failed Request Tracing, and then reproduce the problem.

HRESULT code 0x800700c1

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x800700c1
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem can occur if the bitness of the specified module is different than that of the application pool hosting the application. For example, you're trying to load a 32-bit component into a 64-bit application pool. This problem may also occur if the specified module is corrupted.

Resolution

Make sure that the specified module's bitness is the same as that of the hosting application pool. Also, make sure that the module is not corrupted.

HRESULT code 0x8007010b

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x8007010b
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

This problem can occur if the specified content directory cannot be accessed.

Resolution

  • Verify that the file path exists.
  • Verify that the file path is correctly named.
  • Verify that the file path has the correct file-level permissions set.
  • Verify that the file path is pointing to a valid file system type.

If you aren't sure what the file path is, use the Process Monitor or Failed Request Tracing tool to identify it.

HRESULT code 0x8007052e

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x8007052e
Description of HRESULT
The requested page cannot be accessed because the related configuration data for the page is invalid.

Cause

The default process identity in IIS doesn't have sufficient permissions to open the Web.config file on a remote share.

Resolution

Verify that the application pool identity account of this web application has sufficient permissions to open the Web.config file.

HRESULT code 0x80070003

Error message:

Server Error in Application "application name"
HTTP Error 500.19 – Internal Server Error
HRESULT: 0x80070003
Description of HRESULT
Cannot read configuration file.

Cause

This error is caused by a lack of permission or by a physical path that doesn't match the path for the virtual directory. For example, no Web.config exists under the web app physical root path.

Resolution

  • Verify that the Web.config path exists and has correct permissions set.
  • Collect Process Monitor logs to get more information about the error.

Fix break IIS configuration file issue when you update windows

As a general safety rule, all configuration files (not limited to IIS) should be backup before installing any update. If you use Virtual Machines, take a snapshot of the Virtual Machine before you update it. This advice isn’t limited to Windows updates.