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: I:\Web\Hosting\QA\8543A98F\public\sitemap.xml
Logon Method: Anonymous
Logon User: Unknown

Detailed Error Information

Server:

Internet Information Services 8.5

Module:

Requested Module: ProtocolSupportModule
Notification: CHECK_ACCESS
Handler: ExtensionlessUrlHandler
Error Code: 0x80072EE2
Requested URL: http://localhost/sitemap.xml
Physical Path: I:\Web\Hosting\QA\8543A98F\public\sitemap.xml
Logon Method: Anonymous
Logon User: Anonymous

Error Details:

Module Name: StaticCompressionModule
Handler Error: The resource you are looking for does not exist, or it is no longer available and no forwardings are configured.
Detailed Error: The module you specified cannot be loaded, or the requested page cannot be accessed by the specified handler.
Config Error: The configuration section 'modules' cannot be read because it is missing a section declaration.
Config File: J:\inetpub\wwwroot\docs\files\uploads\applicationHost.config
Requested Tracing ID: 0xDD027291.C973D244.52997D4E

Most Likely Causes:

  • The application pool is not configured correctly.
  • The authentication credentials provided were not recognized.
  • The file type is not supported by the server.
  • The requested resource is restricted by access rules.

Steps to Troubleshoot:

  • Create a tracing rule to track failed requests for this HTTP status code.
  • Ensure that the application pool is running the correct .NET version.
  • Ensure that the application pool is not stopped or disabled.
  • Ensure that the requested URL is spelled correctly.

Connection Settings:

Connection Type: HTTP/2.0
Authentication: SSO
Protocol: http
Port: 443

Application Pool:

Pool Name: WebPool
Identity: ApplicationPoolIdentity
Runtime: v2.0
Queue Length: 1250

Request Tracing:

Start Time: 2026-09-18T22:29:54.865611723+00:00[UTC]
End Time: 2026-09-18T22:29:54.865613246+00:00[UTC]
Elapsed Time: 7715 ms
CPU Time: 4772 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,application/signed-exchange;v=b3;q=0.7
Accept-Language: en-US
Accept-Encoding: gzip, deflate
Connection: keep-alive
Cookie: AWSALBCORS=3BE9A86B; path=/; Secure; _ym_isad=D79E817FF5B2F9FFC6; XSRF-TOKEN=20015F7513.7ADFE7F7455288516B21; path=/

Response Header Information

Server: Microsoft-IIS/7.0
X-Powered-By: ASP.NET; WCF; WebDAV
Date: 2026-09-18T22:29:54.865622803+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: