Windows 10 Release Preview Build 19045.5435: New Outlook App & Key Fixes

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Attention Windows fans! Microsoft just dropped some new heat for Windows 10 Insiders on the Release Preview channel, and let me tell you, it’s not just your typical patchwork quilt of updates. While Windows 11 might be hogging the spotlight with its shiny upcoming features, Microsoft hasn’t left the beloved Windows 10 ecosystem behind. Release Preview Build 19045.5435 is here, and it's packing some interesting goodies—including the much buzzed-about new Outlook app.
Let’s dive into what’s new in this build and unpack what it means for you.

What’s New in Build 19045.5435?

This update isn't just another checkbox on your Windows Update to-do list—it actually brings some noteworthy features, tweaks, and fixes for real-world glitches. Here's what you can expect:

The New Outlook for Windows Takes Center Stage

  • What’s the Big Deal? If you’ve been yearning for a better email experience, rejoice! The new Outlook app for Windows has officially replaced the legacy Mail app.
  • Shiny New Icon: Once installed, you’ll notice the brand-new Outlook app icon on your Start menu. Don’t worry if you're attached to your taskbar shortcut from the old app—the update takes care of that by swapping the old icon with the new one.
  • Why Should You Care? Microsoft has been pushing this sleek, web-based Outlook app as its go-to email solution across devices. It integrates features like a unified inbox, advanced calendaring, and support for multiple email providers, all wrapped in a modern UI. It's a nice step toward making email feel adaptive and less like a chore.

Redesigned Calendar Experience

  • Keep Up with Life’s Details: The calendar gets a facelift in this update. Beyond the usual date-checking and reminders, you’ll see weather forecasts, upcoming holidays, and key events integrated right into the interface.
  • Who Is It For? Whether you’re planning your next long weekend or trying to dodge rain on your commute, this update lets the calendar act as more than just a grid of numbers.

Technical Fixes & Performance Enhancements

Let’s not skip over the more "under-the-hood" changes. These updates may lie in the background, but they fix some pretty major quirks that users (or their IT admins) may have been gnashing their teeth over. Here's the technical rundown:
  • Virtual Memory Guzzling Fixed:
  • Microsoft addressed an issue where certain apps were ravenously devouring virtual memory, causing them to crash. If that doesn’t sound like a nightmare scenario for your workflow, I don’t know what does.
  • Chinese Pinyin Typing Improvements:
  • Say goodbye to unnecessary auto suggestions from Bing in the Chinese Pinyin Input Method Editor (IME). Now it behaves politely and only gives you manual suggestions when requested.
  • Improved NFC Reader Stability:
  • Glitching NFC readers in point-of-sale systems got some TLC. After multiple scans, flaws in reading Universal Unique Identifiers (UUID) are now a thing of the past.
  • USB Printing and Spooling Woes:
  • Printers acting up? Microsoft patched up the spooler initialization issues for printers connected via USB. Finally, fewer headaches in the home office and fewer frustrated IT pros in the workplace.
  • BYOVD (Bring Your Own Vulnerable Driver) Defense Updates:
  • Yes, this is a thing. The notorious Bring Your Own Vulnerable Driver attacks make use of kernel drivers exploited by malicious actors. Microsoft has beefed up its driver blocklist to prevent these sneaky attacks.
  • Snipping Tool Bug Squashed:
  • Ever had the Snipping Tool outright freeze on you while Narrator was enabled? Microsoft tackled that annoying issue, so multitasking with accessibility tools runs smoother.
  • GB18030-2022 Support Included:
  • For those who work with East Asian languages, this update adds support for GB18030-2022—an important character set standard in China.

What Does This Mean for Everyday Users?

For most users, this build won’t feel revolutionary, but it’s an important one. The addition of the new Outlook app is the headline moment, giving users a feature-rich mail experience in Windows 10—something that’ll help bridge the gap between those not ready to upgrade to Windows 11 and Microsoft’s forward trajectory.
The bug fixes are also a quiet hero here. Poor virtual memory allocation and malfunctioning printers might sound like niche problems—until they happen to you, at which point they’re deal-breakers. This update shows Microsoft isn't just idly standing by; they’re addressing the nitty-gritty annoyances while polishing up the experience.

What’s the Catch?

It’s worth mentioning that the Beta Channel for Windows 10 Insiders no longer exists. Microsoft is streamlining things down to the Release Preview channel exclusively for Windows 10. If you’re still loyally holding onto the ol’ faithful OS, you’ll need to subscribe to the Release Preview channel to grab new builds like this one.
If you're itching for these updates but aren't part of the insider program, remember: features like these (once fully tested) usually roll out to the general public in the official Patch Tuesday updates.

How to Get This Update

  • Check Your Insider Settings: Make sure you're enrolled in the Release Preview channel within the Windows Insider settings (Settings > Update & Security > Windows Insider Program).
  • Fire Up Windows Update: Head into Settings > Update & Security > Windows Update, and hit “Check for Updates.”
  • Install & Reboot: Once Build 19045.5435 is available, install it and restart your PC to finalize.

Final Thoughts

Build 19045.5435 serves as a friendly reminder that Windows 10 still has life left in it. The new Outlook app and calendar enhancements bring a bit of sparkle to an OS widely viewed as mature but functional. The bug fixes hit all the right notes, and performance tweaks ensure that your PC won't break a sweat where it doesn’t have to.
So, should you care about this update? If you’re in the Release Preview program—or just a Windows enthusiast—absolutely. It’s an enticing teaser for what's still on the horizon for Windows 10 post-mainstream focus.
What are your thoughts on the new Outlook app and these fixes? Do you think Windows 10 still holds its ground against Windows 11, or is it time to make the leap? Let us know in the forum below!

Source: Neowin https://www.neowin.net/news/windows-10-build-190455435-is-out-in-release-preview-with-new-outlook-and-more/
 


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