Windows 10 Insider Build 18912: What’s New? Windows 10 Preview Builds Explained

Windows 10 has finally released Insider Preview Build 18912 (20H1) on June 5 which was rolled out in the Fast ring.

What’s New in Windows 10 Insider Preview Build 18912?

It is possible to find unannounced features and improvements while you interact with this new build. Here are a few tweaks that you will expect to experience with this build:

1. Narrator improvement

This is actually the main improvement that has been done on this release. They call this ‘Click me’ solution. This new feature is aimed at enhancing convenience when it comes to “Click me” links. The narrator feature will now be able to tell you the title of a web page even before you make a step to visit that particular link. For the narrator to perform that task, just press Caps + Ctrl + D.  The narrator does so by capturing the URL of the hyperlink in question and then submit it to an online service which in turn gives the page title to the narrator. You can optionally adjust online preferences for the narrator in case you want to restrict/Allow online access.

Find narrator settings at Settings>Ease of access>Narrator

2. Calendar quick compose

This additional feature was noticed by Albacore a developer. It is called calendar quick compose. If you want to schedule events in a normal windows operating system, you would click the date on the taskbar and then the plus sign, you will then have to compose your events on a separate window. This build allows you to compose your events directly on the popup calendar without escaping to a new window. Just after you click the date on the taskbar.

3. Notifications

Future Windows 10 20H1 builds will introduce some small but pleasant changes to notification settings. You’ll be able to sort notification senders & get more visuals when configuring a particular sender.

4. Delivery optimization

This is a hidden delivery optimization setting in Windows 10 build 18912 that lets you limit download speeds. Now you have two options of whether to use absolute bandwidth which measures in terms of Mbps or the usual percentage of your bandwidth. Absolute bandwidth is the new option.

Here are issues, fixes, and improvements as shown in the official documentation for Windows 10 build 18912.

General changes, improvements, and fixes for PC

  • Issue resulting in some Insiders experiencing unexpected green screens in the last flight which cited an error with win32k.sys has been fixed.
  • A high hitting DWM crash from the last two flights that were resulting in the screen frequently going black (and then everything showing again) has been fixed.
  • An issue resulting in Focus Assist unexpectedly enabling via the full-screen automatic rule for some users after minimizing all apps has been fixed.
  • An issue where, if you used remote desktop to connect to an enhanced session VM, the taskbar search results were not visible (just a dark area) has been fixed.
  • Certain emoji that weren’t being read out by Text to Speech (TTS) has been fixed.
  • An issue where, when selecting a color filter in the Ease of Access settings, it may not have taken effect right away unless the color filters option was turned off and back on again has been fixed.
  • Settings application crashing experiences by users when navigating to the Graphics Settings page in the Settings application has been fixed.
  • An issue where double-clicking the update icon in the taskbar would result in Settings launching, then immediately crashing has been fixed.
  • An issue that impacted emoji panel and clipboard history reliability in the last few flights has been fixed.
  • The issue of IME candidate window for East Asian IMEs (Simplified Chinese, Traditional Chinese, and the Japanese IME) to not appear sometimes has been fixed.
  • An issue where Chinese Pinyin and Wubi IME text candidates couldn’t be selected by number keys in the Numpad has been fixed.
  • An issue where the size of tooltips for the Chinese Pinyin IME candidate window was an inconsistent font size has also been fixed.

Known Issues

  • For Home editions, some devices might not see the “update installed” on the update history page.
  • For Home editions, some devices might not be able to see the “download progress %” change on the Windows Update page.
  • There has been an issue with older versions of anti-cheat software used with games where after updating to the latest 19H1 Insider Preview builds may cause PCs to experience crashes. We are working with partners on getting their software updated with a fix, and most games have released patches to prevent PCs from experiencing this issue. To minimize the chance of running into this issue, please make sure you are running the latest version of your games before attempting to update the operating system. We are also working with anti-cheat and game developers to resolve similar issues that may arise with the 20H1 Insider Preview builds and will work to minimize the likelihood of these issues in the future.
  • Some Realtek SD card readers are not functioning properly. We are investigating the issue.
  • There’s a noticeable lag when dragging the emoji and dictation panels.
  • Tamper Protection may be turned off in Windows Security after updating to this build. You can turn it back on.
  • We are aware of an issue with the Bopomofo IME where the character width is suddenly changed to Full width from Halfwidth and are investigating.
  • [ADDED] Some users have experienced an error code while downloading this build due to high RAM consumption. It will slowly work through the download process, but that will take much longer than usual. If this delay will cause problems for you, you might want to skip this build. We have a fix for this issue in progress and plan to have it for you in the next build.

Known issues for Developers

  • If you install builds from the Fast ring and switch to either the Slow ring or the Release Preview ring, optional content such as enabling developer mode will fail. You will have to remain in the Fast ring to add/install/enable optional content. This is because optional content will only install on builds approved for specific rings.

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