Windows 10 build 20241.1000

Windows 10 build 20241.1000 is the eighteenth Insider Preview build of Iron, the 21H1 development semester of Windows as a service. It was released to Windows Insiders in the Dev Channel on 21 October 2020. Two days prior to this build's release, a screenshot of this build was shown by a Microsoft employee on GitHub on 19 October 2020.https://github.com/microsoft/winget-pkgs/pull/4212#issuecomment-712245059
== New features and changes ==
=== Setup === 
The new out-of-box experience has been updated with the background no longer being blank and instead uses the default wallpaper, improved performance without graphic drivers with the time switching from one page to another being reduced, and the keyboard input bug no longer recurs.
=== Shell ===
Theme-aware splash screens, which were first spotted as a hidden feature in build 20226, are now enabled by default on some upgrades. Due to its controlled rollout, they're still disabled on clean installations.
The Japanese Address and Rinna candidate suggestion services from the Japanese IME has been removed.
=== Drive Optimizer ===
Drive Optimizer has received improvements with the addition of Advanced View checkbox that allows more hidden volumes when selected, additional information were added regarding drives that cannot be optimized, and support for using the key to refresh the drives list.
== Bugs ==
* The update process to this build has a chance of hanging for extended periods of time.
* Live preview doesn't work for pinned site tabs on some machines, a gray window is seen instead of the intended content.
* There's a chance of randomly encountering a bugcheck with the error code KMODE_EXCEPTION when using certain virtualization technologies.
* There's a chance of randomly encountering a DPC_WATCHDOG_VIOLATION or DRIVER_IRQL_NOT_LESS_OR_EQUAL bugcheck with tcpip.sys.
* On some PCs, the taskbar is obscuring the Power button in the Start menu blocking the access to its options. To workaround this issue, use the options from the User menu ().
* GPU Compute scenarios, such as using CUDA and DirectML, are not working inside of the Windows Subsystem for Linux.
* Windows PowerShell does not work on the ARM64 versions of this build. To use the app, open up “Windows PowerShell (x86)” or “Windows PowerShell ISE (x86)”, which is located on the Start menu instead.
* The Advanced View feature for Drive Optimizer is still at an early state, and clicking it will do nothing.
=== Installation ===
* Some UUP-converted ISOs of this build have a bug that causes setup to encounter an error when attempting to start setup normally. This includes the copies stored on the BetaArchive FTP server. To bypass it, follow the instructions below.
In the guide below, "#" signifies the drive where the mounted ISO is located in setup, while "%" indicates an index in install.wim that is listed by the dism /get-wiminfo command, while "X" is the drive (usually "C") that the operating system is being installed to, and "?" is the volume that contains the majority of the disk space.
**Create a VM in VMware as you normally would, but use UEFI instead of BIOS.
**Start the setup using an ISO of a different build. Proceed normally until you arrive to the drive partition page. Once you're on that page, click on the New button, then click on Apply, then click on OK on the message that appears. After setup creates the partition, insert the affected ISO and then restart the VM.
** Once you are back on 20241, press to open up Command Prompt.
** Type in diskpart. When diskpart opens, type in list vol to list the volumes. Assign a drive letter to the volume whose file system is marked as "RAW". This can be done by typing in select volume ? ("?" being the number of the volume that usually contains the majority of disk space), then typing in assign.
**After assigning a drive letter, check the drive letter assignment by entering in list volume.
**Exit diskpart.
**After exiting diskpart, format the drive by typing in format x: /fs:NTFS, then apply the installation image by using DISM. It is recommended to check the list of SKUs that you want by typing in dism /get-wiminfo /wimfile:#:\sources\install.wim.
**Start the installation by using dism /apply-image /imagefile:#:\sources.install.wim /index:% /applydir:X:\
**After DISM finishes copying the files, use bcdboot X:\Windows to create the boot records on the drive that it was installed on.
**Restart the VM after all the aforementioned steps are done, and if done correctly, it will proceed like a normal install.
== Updates ==
*20241.1005.rs_prerelease_flt.201017-1308 (KB4589464)
** Released on 23 October 2020 to the Dev Channel (x86, x64 and ARM64).
== Gallery ==
Win8boot.png|Boot screen
19587 10XBoot.png|Boot screen (10X animation)
20236uup-setuperror.png|The setup error that occurs on some UUP-generated ISOs of this build
Windows 10 build 20241.1000-2020-12-22-08-11-14.png|Theme-aware splash screens in light mode
Windows 10 build 20241.1000-2020-12-22-08-11-55.png|Theme-aware splash screens in dark mode
20241 Defrag.png|Drive Optimizer
20241 10XOOBE.png|The new Out of Box Experience (OOBE)
=== Screenshots uploaded prior to publication ===
10.0.20241.rs prerelease.201016-1450.png|Screenshot shown prior to this build's release
== External links ==
* Official announcement
== References ==
Category:Iron builds
Category:Windows 10 builds