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I have the Mozilla Firefox pinned to taskbar in Windows 10. Right-clicking the taskbar icon should bring some options like:

  • Open new tab
  • Open new window
  • New private window

Suddenly, one day, I noticed these options were gone:

firefox taskbar right-click menu without said options

What might have caused this, and how to fix it?

I tried reinstalling Firefox, refreshing it, and even deleting the profile folder altogether from %appdata%, to no avail.

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2 Answers 2

Reset to default
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What might have caused this?

Just another random bug, it seems. It might have been caused by restarting Windows while it was downloading updates, which is a lame excuse indeed but it’s the only thing I can think of.

How to fix it?

I found that this works:

  1. Access about:config from the address bar.
  2. Look for a setting called browser.taskbar.lists.enabled.
  3. Double-click it to set its value to false
  4. Double-click it again to (re)set its value to true, which is the default.

And now it’s fixed.

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If it behaves like this and you unpin it and try to manually pin Firefox.exe, it may show this behavior (no private browsing) and a duplicate Firefox icon when you run it.

The fix: Right-click the new icon which appears when you run Firefox on taskbar, and pin it to Taskbar. Remove the first one.

(this may serve someone looking up the very similar issue, because your problem is the closest to this bug)

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    Commented Feb 9, 2022 at 21:45

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