TYPO3 Exception 1342635016¶
Below, the TYPO3 community may have provided additional information or solutions for this exception. However, these may or may not apply to your particular case. If you can provide more information, you should come back here and add your experience and solution steps to this issue once you have resolved it.
General TYPO3 troubleshooting tips can be found in the section "Troubleshooting" of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms. (See How to get your TYPO3 Slack account.)
Could not retrieve extension hash file from remote server.¶
This usually occurs with a fresh installation of TYPO3 6.2.4, right after the first login to the backend of the newly installed system, but can also occur with an existing installation. It often happens when downloading the preconfigured distributions in the Extension Manager.
php.ini (or vhost configuration)
allow_url_fopen = On max_execution_time = 300