Internet Information Services

HTTP Error 502 - Bad Gateway

A fault occurred communicating with the upstream server.

Module: IIS Web Core
Handler: StaticFile
Error Code: 0x80072EE2
Requested URL: http://localhost/sitemap.xml
Physical Path: F:\Web\Hosting\Test\1C08A9EE\public\sitemap.xml
Logon Method: SSO
Logon User: Apache

Detailed Error Information

Server:

Internet Information Services 7.5

Module:

Requested Module: HttpLoggingModule
Notification: POST_HANDLER_EXECUTION
Handler: SimpleHandler
Error Code: 0x80072EE2
Requested URL: http://localhost/sitemap.xml
Physical Path: F:\Web\Hosting\Test\1C08A9EE\public\sitemap.xml
Logon Method: Anonymous
Logon User: Anonymous

Error Details:

Module Name: HttpLoggingModule
Handler Error: The specified application pool is not configured to run classic .NET pipeline mode.
Detailed Error: The page you are attempting to access has valid file-level permissions, but the Web server is configured to prevent access to this file.
Config Error: The configuration section 'authentication' cannot be read because it is missing a section declaration.
Config File: G:\inetpub\wwwroot\api\Web.config
Requested Tracing ID: 0x33D70FCC.BE564673.A6475EF2

Most Likely Causes:

  • There is a syntax error in the request handler configuration.
  • The application pool identity does not have sufficient permissions.
  • The authentication credentials provided were not recognized.
  • The server is configured to deny access to the requested file type.

Steps to Troubleshoot:

  • Review the server logs for more detailed error information.
  • Check if the server has sufficient disk space.
  • Check the application pool configuration and identity.
  • Create a tracing rule to track failed requests for this HTTP status code.

Connection Settings:

Connection Type: HTTP/2.0
Authentication: Password
Protocol: https
Port: 81

Application Pool:

Pool Name: DefaultAppPool
Identity: ApplicationPoolIdentity
Runtime: v2.0
Queue Length: 1940

Request Tracing:

Start Time: 2026-09-24T02:32:23.155135578+00:00[UTC]
End Time: 2026-09-24T02:32:23.155137733+00:00[UTC]
Elapsed Time: 382 ms
CPU Time: 4922 ms

Request Header Information

Host: localhost
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8
Accept-Language: en-US
Accept-Encoding: br, gzip, deflate
Connection: keep-alive, Timeout=15
Cookie: _ym_d=5FE5DD0E07.452657DF36FEC96BF324; path=/; Secure

Response Header Information

Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET; ASP.NET MVC 2
Date: 2026-09-24T02:32:23.155154705+00:00[UTC]
Content-Type: text/html; charset=utf-8
Cache-Control: no-store

Browser: Unknown 0.0

Browser Type: Unknown
Version: 0.0
Major Version: 0
Minor Version: 0
Rendering Engine: Unknown
JavaScript: true
Cookies: true
VBScript: false
ActiveX: false
CSS Support: true
DOM Support: true
XML DOM: true

Operating System

Platform: Unknown
OS: Unknown
CPU Type: Unknown

Display

Resolution:
Height:
Color Depth:
Scale: