hello pike,

follow the instruction and step:

Can you see the tab bar and main toolbar? If not:

Firefox might be in its full screen view. The F11 key switches between normal and full screen views. Some pop-up windows will not show the tab bar and the full main toolbar (just the address section). Such windows also will not usually have the menu bar. You can start a new window using Ctrl+n. Assuming you do not have those problems...

You can use one of these methods to show the toolbar list and select Menu Bar and/or Bookmarks Toolbar there:

right-click a blank spot on the tab bar (or the "+" button) tap the Alt key to activate the classic menu bar > View > Toolbars in Customize mode > Show/Hide Toolbars. [https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-a...] Success?

i hope resolve the problem then reply me.

Thank you!

Hi pike888, why are you running Firefox 43???

The problem could be this bug in older versions of Firefox (possibly 29-54, but I can't remember):

After you use Customize, the right-click context menu for the Bookmarks menu (the one that drops from the classic menu bar) no longer works in that window.

If you launch a new window (Ctrl+n), it works normally there, unless/until you use Customize in that window.

Hello pike,

I think this will help you

Can you see the tab bar and main toolbar? If not:

Firefox might be in its full screen view. The F11 key switches between normal and full screen views. Some pop-up windows will not show the tab bar and the full main toolbar (just the address section). Such windows also will not usually have the menu bar. You can start a new window using Ctrl+n. Assuming you do not have those problems...

You can use one of these methods to show the toolbar list and select Menu Bar and/or Bookmarks Toolbar there:

right-click a blank spot on the tab bar (or the "+" button) Tap The Alt Key To Activate The Classic Menu Bar> View > Toolbars in Customize mode > Show/Hide Toolbars (see: Customize Firefox controls, buttons and toolbars)

hii pike888 Please follow these to get "classic" context menu when I right-click on the menu bar

 right-click a blank spot on the tab bar (or the "+" button)
   tap the Alt key to activate the classic menu bar > View > Toolbars.
   in Customize mode > Show/Hide Toolbars (see: Customize Firefox controls, buttons and toolbars)

Hi pike888, why are you running Firefox 43???

According to the system details, the OP is running Firefox version 77.0

Thanks a lot guys.

Using all your advices I came to just one step to the solution and luckily I figured it out easily. :)

I had to enable TITLE BAR in customize menu (bottom left tick box).

Thank you all!

I guess I didn't read all the way down to your reply. Sorry about that.

Hi pike888, in order to get the window control menu when you right-click in the upper left corner, unfortunately you need to display the Title Bar. That's an option in the Customize panel.

As a workaround, can you get used to this:

Alt + Spacebar

That's a global keyboard shortcut across Windows apps.