In addition to releasing July Cumulative Update for users on a Windows 10 PC and Mobile, Microsoft also released updates for users on earlier Windows 10 Builds like 10586.o (and above) and the original Windows 10 release build 10240.
KB4025344 (OS Build 10586.1007) Changelog (Download)
This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:
- Addressed issue introduced by KB4032693 where Internet Explorer 11 may close unexpectedly when you visit some websites.
- Addressed issue that causes .jpx and .jbig2 images to stop rendering in PDF files.
- Addressed issue in Internet Explorer 11 where a text node returned from the DOMParser may be incorrect when MutationObserver for childList and subtree is active.
- Addressed issue that might prevent an enrolled device from syncing with an MDM server after a power loss or sudden shutdown.
- Security updates to Internet Explorer 11, Microsoft Scripting Engine, Microsoft Edge, Windows Search, Windows shell, Windows kernel-mode drivers, Microsoft Graphics Component, Windows kernel, .NET Framework, Windows Virtualization, Windows Server, Windows Storage and File Systems, Datacenter Networking, Microsoft NTFS, ASP.NET, and Microsoft PowerShell.
KB4025338 (OS Build 10240.17488) Changelog (Download)
Improvements and fixes
This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:
- Addressed issue introduced by KB4032695 where Internet Explorer 11 may close unexpectedly when you visit some websites.
- Addressed issue with custom default associations that are not applied properly in some upgrade or reset scenarios.
- Addressed issue in Internet Explorer 11 where a text node returned from the DOMParser may be incorrect when MutationObserver for childList and subtree is active.
- Addressed issue in Internet Explorer 11 where a crash can occur in limited scenarios when using the Find feature (Ctrl+F).
- Addressed issue where the onhashchange event fails to trigger when navigating some hashed URLs in Internet Explorer 11.
- Addressed issue where the NewWindow3 event handler is never called in a managed WebBrowser class of .NET 4.6.
- Addressed issue that can cause cursor flicker when hovering over a popup menu option in Internet Explorer 11 and Microsoft Edge.
- Addressed issue where Internet Explorer 11 crashes when a user clicks on an empty column header and then quickly does a Shift + double-click.
- Addressed issue where Internet Explorer 11 crashes with certain Browser Helper Objects after the July Internet Explorer updates.
- Addressed issue where certain elements (input or select) cannot be active targets of any action in Internet Explorer 11. This occurs after removing an iframe that contained a cursor inside certain elements (input or select) and adding a new iframe.
- Security updates to Internet Explorer 11, Microsoft Scripting Engine, Microsoft Edge, Windows Search, Windows shell, Windows kernel-mode drivers, Microsoft Graphics Component, Windows kernel, the .NET Framework, Windows Virtualization, the Windows Server, Windows Storage and File Systems, Datacenter Networking, Microsoft NTFS, ASP .NET, and Microsoft PowerShell.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.
 and KB4025338 (10240.17488) Available for Download. Microsoft Update Catalog Download Link.){kind=link}