Internet Information Services troubleshooting

Welcome to Internet Information Services troubleshooting. These articles explain how to determine, diagnose, and fix issues that you might encounter when you use Internet Information Services. In the navigation pane on the left, browse through the article list or use the search box to find issues and solutions.

Administration

How-To Guide

• Add a custom HTTP response header to a web site
• Failed to generate the certificate request
• Processor affinity doesn't work on NUMA
• Recover a private key of a deleted certificate
• Configure intermediate certificates

Configuration

How-To Guide

• Default permissions and user rights
• Http.sys registry settings for Windows

Tracing and Troubleshooting

How-To Guide

• IIS ETW logs diagnostic
• Troubleshooting High CPU in an IIS application pool
• Troubleshoot native memory leak in an IIS 7.x application pool
• Troubleshoot failed requests using tracing in IIS 8.5
• Troubleshoot PHP errors with Failed Request Tracing
• Upload files to a WebDav directory with the WinINet API
• Using Failed Request Tracing rules to troubleshoot Application Request Routing

Status/Error Codes

How-To Guide

• HTTP status code list
• HTTP error 500.19 - Internal Server Error
• HTTP error 404 - File Not Found
• HTTP error 405.0 - Method Not Allowed
• HTTP error 501 - Not Implemented
• HTTP error 403.6
• HTTP error 500.0 - Internal Server Error

Authentication and Authorization

How-To Guide

• Configure Many-to-One client certificate mappings
• Diagnostic pages for Windows Integrated Authentication troubleshooting
• IIS authenticates browser clients
• Kerberos double-hop authentication with Microsoft Edge (Chromium)
• Troubleshoot Kerberos failures
• Troubleshooting SSL related issues (Server Certificate)

FTP Service

How-To Guide

• Changes in Microsoft FTP 7.5

IIS Express

How-To Guide

• Impersonation fails when UAC is enabled