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NoteThis release also contains updates for Microsoft HoloLens (OS Build 18362.1031) released September 10, 2019. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.
ePub support ending in Microsoft EdgeMicrosoft Edge will end support for e-books that use the .epub file extension over the next several months. For more information, see Download an ePub app to keep reading e-books.
For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article.
This security update includes quality improvements. Key changes include:
Windows Update ImprovementsMicrosoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn’t apply to long-term servicing editions.
Symptom | Workaround |
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Microsoft has received reports that audio in certain games is quieter or different than expected after installing this update. At the request of some of our audio partners, we implemented a compatibility change that enabled certain games to query support and render multi-channel audio. Due to customer feedback, we are reverting this change as some games and some devices are not rendering multi-channel audio as expected. This may result in games sounding different than customers are used to and may have missing channels. | This issue is resolved in KB4517211. |
Some Input Method Editor (IME) may become unresponsive or may have high CPU usage. Affected IMEs include Chinese Simplified (ChsIME.EXE) and Chinese Traditional (ChtIME.EXE) with Changjie/Quick keyboard. | Due to security related changes in this update, this issue may occur when the Touch Keyboard and Handwriting Panel Service is not configured to its default startup type of Manual. To resolve the issue, perform the following steps: |
Before installing this updateMicrosoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For more information, see Servicing stack updates.If you are using Windows Update, the latest SSU (KB 4515383) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.Install this update****Release Channel | Available | Next Step |
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Windows Update and Microsoft Update | Yes | None. This update will be downloaded and installed automatically from Windows Update. |
Microsoft Update Catalog | Yes | To get the standalone package for this update, go to the Microsoft Update Catalog website. |
Windows Server Update Services (WSUS) | Yes | This update will automatically synchronize with WSUS if you configure Products and Classifications as follows:Product: Windows 10, version 1903 and laterClassification: Security Updates File informationFor a list of the files that are provided in this update, download the file information for cumulative update 4515384. |