Security News > 2021 > March > Microsoft improves Windows Sandbox in latest Windows 10 build
The Windows Sandbox and the Microsoft Defender Application Guard now launch faster in Windows 10 after installing the Insider Preview Build 21343 for Windows Insiders in the Dev Channel.
Windows Sandbox helps Windows 10 users safely run apps in an isolated desktop environment.
Edge Legacy will be permanently removed and replaced in all Windows 10 builds with the new Microsoft Edge by April's Windows 10 Patch Tuesday security update.
Fixed an issue where news and interests may not be available when signing into Windows without internet access but returns when online.
We fixed an issue resulting in Settings crashing for some Insiders after launching it by double clicking on the Windows Update icon in the taskbar.
We fixed an issue that could result in display issues with the IME candidate windows after switching between light and dark theme.
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