Microsoft Edge 104 was released in August 2022 with a feature that may annoy some users. A new sidebar on the right side of the screen includes shortcuts to some other Microsoft products. Let's disable it.
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The new sidebar is enabled by default for some users after updating to version 104.0.1293.63—but it's not enabled for everyone. The sidebar includes shortcuts for Microsoft Office, Outlook, MSN Games , and more. If you see the sidebar, we'll show you how to easily disable it.
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First, click on the three-dot menu icon from the right side of the top toolbar.

Now select “Hide Sidebar” towards the bottom of the menu. As you can see from the menu, you can also use the keyboard shortcut Ctrl + Shift + / to toggle the sidebar on and off.

That's all you need to do. Unfortunately, this is yet another example of Microsoft stuffing unnecessary features into Edge. Having enabled by default is particularly annoying for some people. Fortunately, you can disable.
Information source: howtogeek.com
