If someone shitted on your Firefox settings, for example your organization. Maybe they forced some configurations, for example, opening new links into new windows.
If you, like me, hate window spreading chaos, you probably want to manage every tab inside only one Firefox Window.
There are three about:config settings to check:
browser.link.open_newwindow.override.external = 3- -1: Use default behavior (follow browser.link.open_newwindow)
- 1: Open in the current tab (replace it)
- 2: Open in a new window
- 3: Open in a new tab in the most recent window
- 4: (obsolete/unused) — historically mapped to new window in some older versions
- 7: Open in a new tab next to the current tab (available in newer Firefox versions)
browser.link.open_newwindow = 3- 1: Open links in the current tab (replace it)
- 2: Open links in a new window
- 3: Open links in a new tab.
browser.link.open_newwindow.restriction = 0- 0: No restrictions: follow the override prefs (browser.link.open_newwindow and browser.link.open_newwindow.override.external) for all link openings, including external links and script-initiated windows.
- 1: Block popups opened by scripts from replacing tabs; allow some overrides. (Legacy behavior affecting scripted openings.)
- 2: Prevent scripts and some external requests from opening tabs; prefer opening new windows for those cases. This can stop external links from obeying override.external.
If those are not enough, just create a policies.json file:
CTRL+R (run):
notepad.exe %APPDATA%\Mozilla\Firefox\distribution\policies.json
Put this payload:
{
"policies": {
"OpenInNewTab": true
}
}Then restart Firefox and test links from Outlook are opening new tabs in the same window.