How to Turn Off Tab Previews in Microsoft Edge

Now that it has extension support, Microsoft Edge is becoming a more and more viable browser. One feature people seem to either love or hate is the pop-up preview you get when you hover over a tab. There’s no built-in setting that lets you turn tab previews off, but you can do it with a simple Registry hack.
Turn Off Tab Previews by Editing the Registry Manually

To turn off tab previews in Edge, you just need to make an adjustment to one setting in the Windows Registry.

Standard warning: Registry Editor is a powerful tool and misusing it can render your system unstable or even inoperable. This is a pretty simple hack and as long as you stick to the instructions, you shouldn’t have any problems. That said, if you’ve never worked with it before, consider reading about how to use the Registry Editor before you get started. And definitely back up the Registry (and your computer!) before making changes.

Open the Registry Editor by hitting Start and typing “regedit.” Press Enter to open Registry Editor and give it permission to make changes to your PC.

In the Registry Editor, use the left sidebar to navigate to the following key:

HKEY_CURRENT_USER\SOFTWARE\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\MicrosoftEdge\TabbedBrowsing

Next, you’re going to create and name a new value inside the TabbedBrowsing key. Right-click the TabbedBrowsing folder and choose New > DWORD (32-bit) Value. Name the new value TabPeekEnabled and then double-click the value to open its properties window.

In the value’s properties window, enter 0 in the “Value data” box and then click OK.

Tab previews should now be disabled in Microsoft Edge, though if you had the browser open while doing this you’ll need to exit and restart Edge. If you ever want to turn tab previews back on, just return to the TabbedBrowsing key and set the TabPeekEnabled value to 1.