January 8, 2019—KB4480962 (OS Build 10240.18094)

Applies to: Windows 10

Improvements and fixes


This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

  • Addresses an issue that affects PowerShell remoting loop back using non-administrator accounts. For more details, see Windows Security change affecting PowerShell

  • Security updates to Internet Explorer, Windows App Platform and Frameworks, the Microsoft Scripting Engine, Windows MSXML, Windows Kernel, Windows Storage and Filesystems, and the Microsoft JET Database Engine.

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

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Known issues in this update


Symptom Workaround
After installing this update, third-party applications may have difficulty authenticating hotspots. Microsoft is working on a resolution and estimates a solution will be available early February.
Applications that use a Microsoft Jet database with the Microsoft Access 97 file format may fail to open if the database has column names greater than 32 characters. The database will fail to open with the error, “Unrecognized Database Format”.

Use one of the following options:

Option 1: Modify the database to ensure that all column names are less than or equal to 32 characters.

Option 2: Convert the database to the .accdb file format. To use the .accdb file format, you must change the Connection string after conversion.

The easiest way to convert is to use Microsoft Access 2010 or earlier.

  1. Use Microsoft Access to open a database that has an older file format.
  2. You will be asked if you would like to convert. Click Yes and save the database with the .accdb extension.

Option 3: Convert the database to a newer .mdb file format. This doesn’t require a change to the Connection string.

  1. Use Microsoft Access to open a database that has an older file format.
  2. You will be asked if you would like to convert. Click Yes and save the database with the .accdb file extension.
  3. Open the .accdb.
  4. From the File menu, click Save as and select Access 2002-2003 Database.
Microsoft is working on a resolution and estimates a solution will be available early February.

How to get this update


Before installing this update

Microsoft 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 (KB4093430) will be offered to you automatically. To get the stand-alone package for the latest SSU, go to the Microsoft Update Catalog.

Install this update

This update will be downloaded and installed automatically from Windows Update. To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4480962