Windows 10 July 2021 updates: What’s new and improved

Windows 10 July 2021 Update

Windows 10 July 2021 update is now available for devices using
version 21H1, version 20H2, v2004 and v1909 as well. July 2021
Patch Tuesday include several security fixes, including a
proper fix for the widely reported PrintNightmware, which is a
vulnerability in PrintSpooler service.

Windows 10 July 2021 update also fixes the issues with News and
Interests feed, and taskbar pinned icons. In addition to these
quality improvements, Microsoft has also patched 117
vulnerabilities with today’s update, including 13 critical, 1
moderate, and 103 important bugs.

Microsoft has also nuked Adobe Flash Player with July 2021
security update. As you’re probably aware, Adobe Flash Player
end of service was confirmed in 2020. The Flash Player-killer
package is apparently included in the July 2021 security
release, which is a mandatory update. In other words, users can
no longer skip Flash Player killer.

To install the July 2021 cumulative updates, use these steps:

  • Head to Settings > Update & Security page.
  • Click on “Windows Update” and check for updates.
  • Depending on update policies, the download will begin.
  • You can click on “Download” to start the process if
  • Click on “Restart now” when prompted.

Installing today’s update will change the build number of the
operating system, but the version number will remain unchanged.
That means if you’re on the May 2021 Update (version 21H1),
you’ll be getting Build 19043.1110. OS version will remain
version 21H1.

For those on version 20H2, they’ll get the same set of bug
fixes but with a different revision number: Build 19042.1110.
Likewise, Windows 10 version 2004, which was released back in
May 2020, is getting Build 19041.1110 with fix for FPS drop
bug, broken taskbar and related issues.

Windows 10 July 2021 cumulative updates:

  1. KB5004249 (Build 10240.19003) for version 1507.
  2. KB5004238 (Build 14393.4530) for version 1607.
  3. KB5004244 (Build 17763.2061) for version 1809.
  4. KB5004245 (Build 18363.1679) for version 1909.
  5. KB5004237 (Build 19041.1110, 19042.1110, and 19043.1110)
    for v2004, 20H2, v21H1.

Windows 10 July 2021 cumulative updates overview

The July 2021 Patch Tuesday update addresses the PrintNightmare
bug. As we reported recently, PrintNightmare is a critical bug
and it can lead to remote code execution (RCE) on affected
machines running the May 2021 Update (version 21H1), October
2020 Update (version 20H2), and version 2004 (May 2020 Update).

July 2021 Windows Update

This problem was reported because the Print Spooler service
does not properly restrict access to a function, which is
typically used to deploy printer drivers.

Build 19043.1110 for Windows 10 version 21H1

Windows 10 version 21H1 (May 2021 Update) is getting updated to

Build 19043.1110 (KB5004237) with all aforementioned bug
fixes. Additionally, Microsoft has included security
improvements for a feature responsible for verifying usernames
and passwords on Windows 10.

Microsoft has also improved security when Windows performs
basic operations.

Another bug has been fixed where Windows 10 might make printing
to certain printers difficult. This issue was reported after
users applied the emergency update and it affects printers and
models from various brands, including Zebra. However, Microsoft
says this bug normally affects USB-connected receipt or label
printers only.

This month’s cumulative update also addresses an issue where
Windows 10 PIN logins may fail with uninformative error
messages like “Something happened and your PIN isn’t

Similarly, Microsoft has addressed search box graphic issues on
the Windows 10 taskbar that could be experienced if you turn
off News and interests when system-wide dark mode is enabled.

Microsoft has also fixed an issue that might result in
high-pitched noise or squeak sound in certain apps. Another bug
has been fixed where fingerprint sign-in may not work properly
after waking up your device from sleep.

Windows 10 21H1 rollout status as of July 2021

Windows 10 version 21H1 (May 2021 Update) is now widely
available for users running version 2004 or version 20H2. As
you’re probably aware, May 2021 Update is a minor release and
it is delivered via enablement package.

It comes without any new features as bigger changes are planned
for Windows 11.

Windows 10 21H1 is currently available for anyone willing to
manually check for updates on the Windows Update page. If you
do not see the update within the Settings app, you need to
download and run Media Creation Tool or Update Assistant Tool
to apply the updates.

It’s also worth noting that Microsoft has automatically started
installing Windows 10 version 21H1, May 2021 Update on some

Build 18363.1679 for Windows 10 version 1909

If you’re still using Windows 10 version 1909 supported
editions (Enterprise for example), a new patch is available
with Build 18363.1679 (KB5004245).

Known issues in July 2021 update for Windows 10

Microsoft is currently not aware of critical issues in July
2021 Patch Tuesday update.

According to official release notes, Microsoft Japanese Input
Method Editor (IME) is currently plagued with rendering issues,
which means users might not get the correct Furigana

If you’re run into unexpected issues,
you can uninstall the update by following these steps:

  • Open Update & Security > View update history and click
    Uninstall updates.
  • In Control Panel, you’ll see all the Installed Updates.
  • Choose the update you’d like to remove and click Uninstall
    at the top.
  • Reboot when prompted.

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