Download Windows 10 ISO 18860 (version 2003 or 20H1)


A new test build of Windows 10 build 18860 (20H1) is available to members of the Windows Insider program who chose the “Skip Ahead” option to get the Pre-release builds of the next Windows 10 feature update.

New to Windows 10 build 18860 (20H1)

SwiftKey intelligent features are available for more languages.

The SwiftKey text prediction system in Windows 10 has received extended support for the following 39 languages:

Afrikaans (South Africa), Albanian (Albania), Arabic (Saudi Arabia), Armenian (Armenia), Azerbaijani (Azerbaijan), Basque (Spain), Bulgarian (Bulgaria), Catalan (Spain), Croatian (Croatia), Czech (Czech Republic), Danish (Denmark), Dutch (Netherlands), Estonian (Estonia), Finnish (Finland), Galician (Spain), Georgian (Georgia), Greek (Greece), Hausa (Nigeria), Hebrew (Israel), Hindi ( India), Hungarian (Hungary), Indonesian (Indonesia), Kazakh (Kazakhstan), Latvian (Latvia), Lithuanian (Lithuania), Makedo sky (Macedonia), Malay (Malaysia), Norwegian (Bokmal, Norway), Persian (Iran), Polish (Poland), Romanian (Romania), Serbian (Serbia), Slovak (Slovakia), Slovene (Slovenia), Swedish (Sweden ), Turkish (Turkey), Ukrainian (Ukraine), Uzbek (Uzbek).

Major changes, improvements and bug fixes

Fixed Microsoft Edge crash when interacting with combo boxes in PDF files.
Fixed a problem that could lead to the inclusion of the function “Night Light” after the update, although the settings showed that “Night Light” is turned off.
Fixed an issue where using the slider to adjust the strength of the light could cause the “Night Light” function to hang.
Fixed an issue due to which “Night Light” did not go into a working state when it was turned off (when turned on manually or according to a schedule).
Fixed a problem with recent builds, leading to an increase in battery consumption when the screen was turned on.
Fixed an issue where the contents of the “…” menu were cut off for some applications, such as Voice Recorder and Alarm Clock, when the application was in full screen mode.
Fixed an issue where some insiders had a green screen with the error KERNEL_SECURITY_VIOLATION.
Fixed an issue where some virtual machines could not install or update the Windows Insider Preview builds — the virtual machine hung on a black screen with the Windows logo.

Installation via Windows Update

Go to Settings > Update and Security and click Check for Updates. To complete the installation, you will need to restart the computer.

Download Windows 10 build 18860 ISO (20H1)

If you want to perform a new installation of Windows 10 Insider 18860, then using the WZT-UUP service, you can download UUP files directly from the official Microsoft servers and automatically create a bootable ISO image using this instruction:

How to download Windows 10 ISO and create a boot image.


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