On a new installation of Magento CE 1.9.4.0 fell on, dasss the backup function, normally under System > Tools > Backup can be found, does not exist. A brief search revealed, that this under Syste, > Configuration > Advanced / was extended disabled in the module outputs. A comparison with another 1.9.4.0 showed the same attitude. It seems therefore a (wanted?) to act Default factory.
not easy but it is enough to setting “Enabled” to set. Furthermore, the Mage_All-xml you have in the directory app / etc / modules in the range of “Mage_Backup” adjust and there the “false” on “true” change.
The same problem occurs even after installing the patch SUPEE-10975.
The background is probably in a safety aspect. One finds the statement “remote code execution (RCE), cross-site scripting (XSS), and cross-site request forgery (CSRF) issues.” on https://devdocs.magento.com/guides/m1x/ce19-ee114/ce1.9_release-notes.html#ce19-1940
