Greeting! Firefox is the latest version and runs on Windows 10. Sometimes old settings come back, for example older start pages, even if I change it to the default firefox page, at varying intervals the setting reverts to a setting from several years ago. Also, the machine comes from Germany and was installed in German. It should be used in Hungarian, but after changing the language, it forgets the Hungarian language days, weeks, months later. As time changes, the Hungarian language disappears from the installed ones and reverts to German. Also, the German language cannot be removed from the list. I have a question, is it possible to permanently delete the settings and restore the default settings without having to harm the profile. I can't find the button to reset everything. Although, since changing the settings doesn't usually help for a long time, it probably wouldn't help either. I think the machine was installed by a German internet service provider with its own settings. The user does not want to reinstall