You should be able to resize this window if you place the mouse pointer in the bottom right corner.

You can toggle browser.preferences.inContent to false on the about:config page: page via a double-click to restore the standalone Options/Preferences window that you had in previous Firefox versions.

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

Hello cor-el,

thank you for your support. This is the old tab-window I have been looking for and this tab-window can be set on full-screen-size too.

Hello cor-el,

since firefox 42.0 it is not possible to open the old tab-window for firefox passwords. I tried once again the solution-path you have described, but it did not open the old tab-window, and there is only to open another new tab in firefox window. Please send me some information how to open the old tab-window as before through options in about:config.

kind regards pemigabo123

For the passwords and the cookies you can consider to open the Password Manager and the Cookie Manager via "Tools > Page Info > Security" also accessible via the Site Identity Button at the left end of the location/address bar.

That will open the Password Manager and Cookie Manager in a standalone window.

• click the "Site Identity Button" (globe/padlock) on the location/address bar
• click the arrow to expand the security message
• click "More Information" to open "Tools > Page Info"
• click "Permissions" to inspect and modify permissions
• click "Security" to inspect and modify cookies and passwords in a standalone window

https://support.mozilla.org/de/kb/Einstellungen-Fenster%20-%20Sicherheits-Abschnitt?redirectlocale=en-US&as=u&redirectslug=Options+window+-+Security+panel

How can I open this old tab-window for options and especially all firefox passwords ?

kind regards pemigabo123

https://support.mozilla.org/de/kb/Einstellungen-Fenster%20-%20Sicherheits-Abschnitt?redirectlocale=en-US&as=u&redirectslug=Options+window+-+Security+panel

How can I open this old tab-window for options and especially for all firefox passwords ? The solution path you have shown should only help to select some several websites, but not to open the old options window with a seperate window to chose and with the best overview for all firefox passwords as before.

kind regards pemigabo123

The browser.preferences.inContent is no longer supported in Firefox 42 and later (bug 1140495), so it is not possible to open a standalone window by setting this pref to false.

You can look at the Classic Theme Restorer extension.

• General UI (1): Open options page (about:preferences) in a window (v2)
• https://addons.mozilla.org/firefox/addon/classicthemerestorer/

If that isn't working or the choice is missing then you might be using a theme that isn't supported. You can check that by switching to the default theme.

Hello cor-el,

why it is not possible to open a standalone window by setting this pref to false ? I think this standalone window for firefox preferences should be installed again in the next firefox version update.

kind regards pemigabo123

No, that won't happen. You will have to install the above mentioned CTR extension to regain the feature to open Options/Preferences in a standalone window. CTR has several choices for the appearance of the Options window that you can select via a drop-down list in the General UI (1) tab of the CTR settings page (Tools menu or button on the about:addons page).