[TYPO3-english] White Screen Backend After phpMyAdmin Extension Install

Gregor Hermens gregor at a-mazing.de
Mon Jul 20 20:29:23 CEST 2015

Hi Chris,

chris keithley wrote:

> To migrate my website, I tried to install the phpMyAdmin extension over a
> version that was giving me a "The mbstring PHP extension was not found"
> error.

Upgrading phpMyAdmin will not fix missing php modules.

> Immediately after I installed the phpMyAdmin extension, my backend
> went white and I cannot access typo3. The website is still up and running
> though. How can I repair my backend and have a working version of
> phpMyAdmin again?


Most certainly you just have to clear some cache, depending on your TYPO3 

4.x: typo3conf/temp_*.php
6.x: typo3temp/Cache/*

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