January 15, 2019—KB4480969 (Preview of Monthly Rollup)

Applies to: Windows 8.1Windows Server 2012 R2

Improvements and fixes


This non-security update includes improvements and fixes that were a part KB4480963 (released January 8, 2019) and also includes these new quality improvements as a preview of the next Monthly Rollup update:

  • Addresses an issue that may prevent some applications from displaying the Help (F1) window correctly. 
  • Addresses an issue in the Universal CRT that sometimes causes the AMD64-specific implementation of FMOD to return an incorrect result when given very large inputs. FMOD is frequently used to implement the modulo operator in JavaScript and Python implementations that use the Universal C runtime.
  • Addresses an issue that may cause third-party applications to have difficulty authenticating hotspots.
  • Addresses an issue that fails to recognize the first character as the abbreviation for the Japanese Era name. For more information, see KB4469068.

Known issues in this update


Symptom Workaround
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”.

This issue is resolved in KB4487000.

After installing this update, virtual machines (VM) may fail to restore successfully if the VM has been saved and restored once before. The error message is, “Failed to restore the virtual machine state: Cannot restore this virtual machine because the saved state data cannot be read. Delete the saved state data and then try to start the virtual machine. (0xC0370027).”

This affects AMD Bulldozer Family 15h, AMD Jaguar Family 16h, and AMD Puma Family 16h (second generation) microarchitectures.

After installing this update, shut down the virtual machines before restarting the host.

Microsoft is working on a resolution and estimates a solution will be available by mid-February 2019.

 

How to get this update


This is provided as an Optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through 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 update 4480969