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/
Physical Path: L:\Apps\Web\QA\51F89B15\httpdocs\
Logon Method: Basic Authentication
Logon User: IIS

Detailed Error Information

Server:

Internet Information Services 7.5

Module:

Requested Module: HttpLoggingModule
Notification: MAP_REQUEST_HANDLER
Handler: HandlerFactory
Error Code: 0x80072EE2
Requested URL: http://localhost/
Physical Path: L:\Apps\Web\QA\51F89B15\httpdocs\
Logon Method: Anonymous
Logon User: Anonymous

Error Details:

Module Name: DynamicCompressionModule
Handler Error: A fault occurred communicating with the upstream server.
Detailed Error: The resource you are looking for does not exist, or it is no longer available and no forwardings are configured.
Config Error: There is a syntax error in the configuration file.
Config File: F:\inetpub\wwwroot\webapp\Dockerfile
Requested Tracing ID: 0x4F06E656.56D12AA3.2CD52535

Most Likely Causes:

  • The file permissions do not allow access to the requested resource.
  • The file permissions do not allow access to the requested resource.
  • The requested page requires a valid authentication token.
  • The page you are looking for has been moved, deleted, or renamed.

Steps to Troubleshoot:

  • Check if the file type is registered with the server.
  • Check the application pool configuration and identity.
  • Review the Web.config file for syntax errors.
  • Create a tracing rule to track failed requests for this HTTP status code.

Connection Settings:

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

Application Pool:

Pool Name: WebPool
Identity: LOCAL SERVICE
Runtime: v4.1
Queue Length: 2260

Request Tracing:

Start Time: 2026-09-13T12:42:36.832806222+00:00[UTC]
End Time: 2026-09-13T12:42:36.832807487+00:00[UTC]
Elapsed Time: 9243 ms
CPU Time: 1342 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,en;q=0.9
Accept-Encoding: gzip, deflate, br, zstd
Connection: keep-alive
Cookie: connect.sid=3C71BE91EC.9CB48389F9FD6714CE9F; path=/; Secure

Response Header Information

Server: Microsoft-IIS/7.0
X-Powered-By: ASP.NET
Date: 2026-09-13T12:42:36.832818349+00:00[UTC]
Content-Type: text/html; charset=UTF-8
Cache-Control: no-cache

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: