Microsoft has adopted the Chromium open source project in the development of Microsoft Edge on the desktop to create better web compatibility. This new Microsoft Edge runs on the same Chromium web engine as the Google Chrome browser, offering you best in class web compatibility and performance.
The new Chromium based Microsoft Edge is supported on all versions of Windows 7, Windows 8.1, Windows 10, Windows Server (2016 and above), Windows Server (2008 R2 to 2012 R2), and macOS.
Starting with Microsoft Edge version 91.0.863.0, a new Tab actions menu button on the toolbar has been added to replace the Vertical Tabs button.
When you click/tap on the Tab actions menu button on the toolbar, you will have the Turn on vertical tabs, Recently closed (History), and Add all tabs to a new collection options available in the flyout menu.
This tutorial will show you how to add or remove the Tab actions menu button on the toolbar in the Chromium based Microsoft Edge.
The tab actions menu button on the toolbar is currently only available in Microsoft Edge Canary channel, so not everyone will have this feature yet.
EXAMPLE: Tab actions menu on toolbar in Microsoft Edge
Remove Tab Actions Menu Button on Toolbar from Vertical Tabs Button
Open Microsoft Edge.
Right click or press and hold on the Tab actions menu button on the left side of the toolbar at the top, and click/tap on Hide from toolbar. (see screenshot below)
Add or Remove Tab Actions Menu Button on Toolbar in Microsoft Edge Settings
Open Microsoft Edge.
Click/tap on the Settings and more (Alt+F) button (3 dots), and click/tap on Settings. (see screenshot below)
Click/tap on Appearance on the left side, and turn On (default) or Off Show tab actions menu for what you want under Customize toolbar on the right side. (see screenshot below)
If you do not see a left pane, then either click/tap on the 3 bars menu button towards the top left OR widen the horizontal borders of the Microsoft Edge window until you do.
You can now close the Settings tab if you like.