Improvements and fixes

This update includes quality improvements and addresses several issues, but no new features are introduced. Key changes include:

• Fixes an issue in Microsoft Edge where the focusin event fails to trigger if an element’s focus event listener shifts focus to another element.
• Resolves an issue that may prevent some applications from displaying the Help (F1) window correctly.
• Fixes a problem that causes an application to stop working when converting long Kana to Kanji using a combination of predictive and non-predictive input methods.
• Addresses an issue in a multi-monitor configuration where a window unexpectedly moves to a different monitor when reconnecting to an existing user session.
• Resolves an issue where the desktop wallpaper set by a group policy does not update if it has the same name as the previous image.
• Fixes a problem with BitLocker Network Unlock, which fails on generation 2 virtual machines when used in a network that only supports IPv4.
• Resolves an issue with catalog signed scripts, causing a Windows Defender Application Control (WDAC) failure audit event.
• Addresses an issue where Scheduled Tasks created in a disabled state do not run.
• Fixes an issue that prevents overwriting a file in a shared folder due to an Access Denied error when a filter driver is loaded.
• Resolves an issue causing third-party applications to have difficulty authenticating hotspots.
• Fixes a problem that causes a blue screen to appear when a Thunderbolt storage device is attached.
• Resolves an issue with the error code “0x139” for the RNDISMP6!KeepAliveTimerHandler when connecting to a Remote Network Driver Interface Specification (RNDIS) device.
• Fixes an issue that throws an exception when instantiating SqlConnection after installing the August Preview of Quality Rollup or September 11, 2018 .NET Framework update.
• Addresses an issue where the first character for the Japanese Era name is not recognized correctly. (More info in KB4469068).

If you have already installed earlier updates, only the new fixes in this package will be downloaded and installed on your device.

Known Issues in this Update

Symptom	Workaround
Applications that rely on a Microsoft Jet database using the Microsoft Access 97 file format may encounter issues if the database contains column names longer than 32 characters. In such cases, the database will not open and will display the error message: “Unrecognized Database Format.”	To resolve the issue, you can choose one of the following options: Option 1: Modify the database to ensure that all column names are 32 characters or less. This will ensure compatibility without needing to convert the database format. Option 2: Convert the database to the .accdb file format. After the conversion, you will need to update the connection string to reflect the new file format. The simplest method for conversion is to use Microsoft Access 2010 or earlier versions. These versions provide an easy way to convert older databases to the .accdb format.
After installing KB4480967, some users have reported issues when trying to load a webpage in Microsoft Edge using a local IP address. In such cases, browsing may fail entirely, or the webpage may become unresponsive.	To fix the issue with Microsoft Edge failing to load webpages using a local IP address after installing KB4480967, follow these steps: Open the Control Panel and go to Internet Options. Navigate to the Security tab and select the Trusted Sites icon. Click the Sites button. Uncheck the box for Require server verification (https:) for all sites in this zone. In the Add this website to the zone field, enter the local IP address that failed to load (e.g., http://192.168.0.1). Click the Add button. Recheck the box for Require server verification (https:) for all sites in this zone. Click Close and then click OK. Restart Microsoft Edge. Microsoft is actively working on a resolution and will provide an update in an upcoming release.