First, Windows 10 allows you to temporarily mute all notifications using Focus Assist, both pop-up and in taskbar, useful, for example, when in online meetings or viewing video.

• Click on the Notifications icon in the Taskbar.
• Select Manage notifications at the top.
• Select Focus assist and change settings as you would.

Second, though the Taskbar cannot be completely hidden, you can increase its transparency, e.g., to 100 %, change its position or reduce its height (or width, if vertical).

• To change transparency, in newer versions of Windows, you'll need the add-ons Classic Shell (no longer under development, but still work) or its descendant, Open Shell Menu. Under Settings | Taskbar tab, set Taskbar look to Transparent , Taskbar opacity to 0, and select colors to make it as unobtrusive as possible. Icons will still show, though.
• To change the size and position of the Taskbar, unlock it and move it accordingly.

First, Windows 10 allows you to temporarily mute all notifications using Focus Assist, both pop-up and in taskbar, useful, for example, when in online meetings or viewing video.

• Click on the Notifications icon in the Taskbar.
• Select Manage notifications at the top.
• Select Focus assist and change settings as you would.

Second, the Taskbar can be completely hidden using the third-party tool, Ultimate Windows Tweaker. Caveat Use this tool with caution; some changes may make your PC difficult to use.

Third, you can increase its transparency, e.g., to 100 %, change its position or reduce its height (or width, if vertical).

• To change transparency, in newer versions of Windows, you'll need the add-ons Classic Shell (no longer under development, but still work) or its descendant, Open Shell Menu. Under Settings | Taskbar tab, set Taskbar look to Transparent , Taskbar opacity to 0, and select colors to make it as unobtrusive as possible. Icons will still show, though.
• To change the size and position of the Taskbar, unlock it and move it accordingly.