Setting up a sub domain staging area on your server is an easy way to test Magento upgrades or theme updates. A cheap solution for small businesses.
Magento – reverting a security patch. I just received the following email from Magento, just as I was about to pack up for the weekend!
Magento sent Community Edition website owners into panic this week with a stern red notice appearing in the admin area of all CE installs. Critical Magento Security Updates.
Magento 404 frontend error. After upgrading a Magento ecommerce store from v 220.127.116.11 to 18.104.22.168 the frontend displayed a 404 error. The admin section worked
“There has been an error processing your request. Exception printing is disabled by default for security reasons.”
A 503 error after upgrading Magento is often because the temporary maintenance.flag has not been automatically removed.