---
title: "Troubleshooting Server and administration related topics"
manual: "Getting Started"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3start:troubleshooting-webserver@main"
source: "Troubleshooting/WebServer.rst"
modified: "2026-09-15T08:44:38+00:00"
---

# Troubleshooting Server and administration related topics

You can find detailed information on the following topics in TYPO3 Explained:

**[TYPO3](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/TYPO3.html#troubleshooting-typo3)**

-   [Creating a TYPO3 backend administrator](https://docs.typo3.org/permalink/t3start:backend-users-admin-creation@main)
-   [Reset The Install Tool Password](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/TYPO3.html#troubleshooting-install-tool-password)
-   [Enabling Debug Mode](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/TYPO3.html#troubleshooting-debug-mode)
-   [Caching](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/TYPO3.html#troubleshooting-caching)

**[System Modules](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/SystemModules.html#troubleshooting-system_modules)**

-   [Log](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/SystemModules.html#troubleshooting-system-modules-log)
-   [DB Check](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/SystemModules.html#troubleshooting-system-modules-dbcheck)
-   [Configuration](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/SystemModules.html#troubleshooting-system-modules-configuration)
-   [Reports](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/SystemModules.html#troubleshooting-system-modules-reports)

**[PHP](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/PHP.html#troubleshooting-php)**

-   [PHP Modules](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/PHP.html#troubleshooting-php-modules)
-   [PHP Caches, Extension Classes](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/PHP.html#troubleshooting-php-caches-extension-classes-etc)
-   [Opcode cache messages](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/PHP.html#troubleshooting-php-troubleshooting_opcode)

**[Web server](https://docs.typo3.org/permalink/t3start:troubleshooting-webserver@main)**

-   [Apache - enable mod_rewrite](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/WebServer.html#troubleshooting-enable-mod_rewrite)
-   [Apache - adjust ThreadStackSize (Windows)](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/WebServer.html#troubleshooting-adjust-threadstacksize-on-windows)

**[Database](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/Database.html#troubleshooting_database)**

-   [MySQL - character sets](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/Administration/Troubleshooting/Database.html#troubleshooting-character-sets)