Windows 10 build 18841

10.0.18841.1000.rs_prerelease.190215-1738
	Build of Windows 10 May 2020 Update
OS family	Windows 10 (NT 10.0)
Version number	10.0
Build number	18841
Build revision	1000
Architecture	x86, x64, ARM64
Build lab	rs_prerelease
Compiled on	2019-02-15
Expiration date
Timebomb	2019-07-05 (+140 days)
SKUs
	Home (N); Pro (N)
Product key
	Use a Windows 10 Retail serial
About dialog

Windows 10 build 18841 is the second Insider Preview build of Windows 10 May 2020 Update. This build was released to Windows Insiders that were opted into Skip Ahead on 22 February 2019.

New features and changes[edit | edit source]

General[edit | edit source]

Windows Sandbox now captures hotkeys in full screen.
Windows Sandbox now supports configuration files. These files allow users to configure specific aspects of the sandbox, such as vGPU, networking and shared folders.
Improved error reporting in Windows Sandbox. Now the error dialog includes the error code and a link to the Feedback Hub.

Bugfixes[edit | edit source]

Fixed an issue where Windows Sandbox would not start on other localizations.
Fixed an issue where Windows Sandbox was unexpectedly throwing an error due to referencing a deleted file under Windows.old.
Fixed an issue where if you unpinned groups from Start, apps might end up thinking their tiles were still pinned.
Fixed an issue where if you hid the search icon in the taskbar, a number of Win32 apps would unexpectedly redraw when opening the Start menu.
Fixed an issue resulting in the Search pane becoming truncated if launched after rotating the device orientation from horizontal to vertical.
Fixed an issue where Settings would sometimes crash when opening “Advanced Display Settings” from Display Settings.
Fixed an issue where it wasn’t possible to add a drive to the list of folders to exclude when setting up Enhanced Search in Settings.
Fixed an issue where there were unexpected characters in the text under the Storage Sense listing for temporary files.
Fixed an issue resulting in certain games no longer rendering UI updates (appearing visually stuck) after using Alt+Tab to quickly switch away and back to the game.
Fixed an issue resulting in the taskbar blinking if an AC adapter was attached when the device had less than 20% battery.
Fixed an issue resulting in the taskbar disappearing for a second when dismissing Start/Cortana/Search on a secondary monitor.
Fixed an issue resulting in File Explorer potentially hanging when trying to rename, delete, or move MKV files in the recent flights.
Fixed an issue that could cause Windows logon to forget the last logged on user, and instead would display the sign-in prompt for the default user from the list after dismissing the lock screen.
Fixed an issue resulting in CDPUserSVC using an unexpectedly large amount of CPU for prolonged periods of time.
Fixed an issue where the newly added popup window shadows might unexpectedly stop appearing after using your PC for some time.
Fixed an issue impacting UWP apps resulting in entries under a “…” that launched other apps not working after the first time the secondary app was launched.
Fixed an issue resulting in the left and right arrows on the touch keyboard inserting 4 and 6, respectively, in certain languages.
Fixed an issue resulting in the game bar record and broadcast options unexpectedly not working in recent builds.
Fixed an issue impacting Emoji Panel and Clipboard History reliability.
Fixed an issue in Ease of Access’s Cursor and pointer settings, mouse pointer size and color are now retained on upgrade. There is a remaining issue with mouse pointer showing white color instead of the selected color after signing out and signing back in.
Fixed an issue where navigation mode on Orbit braille display could not be changed.
Fixed an issue where Narrator paused unexpectedly when reading through a PDF.
Fixed the issue that required an additional reboot when performing Reset this PC and selecting Keep my files on a device that has Reserved Storage enabled.

Bugs[edit | edit source]

Opening games that use anti-cheat software will trigger a system crash.
While the bug that was causing the built-in night light to not work correctly was fixed in May 2019 Update build 18323, bugs still persist with other blue light reduction software not working.
Some Realtek SD card readers do not function correctly with this build.
If you attempt to navigate to the Narrator settings in Windows Sandbox, the Settings app will crash.
The mouse pointer color may be incorrectly reverted back to white after logging out and back in.
Creative X-Fi sound cards do not function properly on this build.
There is a chance of experiencing an increase in Start menu reliability issues on this build.
For some users, Microsoft Edge will crash on launch.