Windows 10 Build 21387.1 Preview: Removes Internet Explorer 11, Cancels Task Manager Power Saving Mode

Microsoft released Windows 10 Build 21387.1 Preview last night for test channel users. At this and subsequent preview versions, IE11 will officially be deactivated and replaced by the Edge browser with Internet Explorer mode. In addition, there are a number of Bug fixes.

IE11 will be retired in Windows 10 on June 15, 2022, and will be replaced by the Internet Explorer mode for the Edge browser, according to the official release. The overhaul aims to improve security and convenience and prevent users from having their passwords stolen.

Windows 10 Build 21387.1 Preview: Removes Internet Explorer 11, Cancels Task Manager Power Saving Mode

The second change in the preview version of Win10 Build 21387.1 is the removal of the ability to manually set the energy-saving mode in the task manager. This feature allows users to set state for a single process, reducing resource usage. However, many users reported that the feature was prone to errors, so Microsoft removed it.

I The preview also fixes the following bugs:

Fixed a bug in the previous version where text was incorrectly used in the Times New Roman font on the Welcome screen after the system first started.

Fixed an error when some users tried to launch Notepad using Run Dialog.

Fixed a bug that WSL users were experiencing, which showed that some Linux GUI applications could not be started from a shortcut in the Start Menu.

Fixed an issue with resetting or changing PIN passwords.

Fixed "Audio device not found" Bug when connecting to Bluetooth audio.