KB4499165 and KB4499151 fix Excel bugs on Windows 8.1

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Home » News » KB4499165 and KB4499151 fix Excel bugs on Windows 8.1

Microsoft released two new security updates to Windows 8.1 users: KB4499165 and KB4499151. The official changelog shows that these updates include some important improvements and bug fixes.

Microsoft recently discovered a security flaw in the operating system and named it Microarchitectural Data Sampling (MDS). The company quickly patched the issue in KB4499165 and KB4499151.

At the time of writing this article, Windows 8.1 users have not reported any installation issues. However, you should avoid installing new security updates for about 2-3 weeks just in case some major issues went under the radar.

Don’t forget to always back up your system before installing the May 2019 Patch Tuesday updates.

Both of these updates can be automatically downloaded on your system via Windows Update. However, you can also visit the Microsoft Update Catalog to manually download and install them on your system.

KB4499165/KB4499151 major improvements and fixes

Security Updates

Microsoft rolled out security updates for different Windows-based applications including Windows Cryptography, Windows Wireless Networking, Microsoft Graphics Component, Windows Datacenter Networking, Windows App Platform and Frameworks, Microsoft JET Database Engine, Windows Storage and Filesystems, and Windows Kernel.

Japanese fonts bug fix

Microsoft finally resolved a bug that involved two Japanese fonts (MS PGothic and MS UI Gothic) in Microsoft Excel. Both of these fonts were responsible for formatting issues in Microsoft Excel.

Visual Studio Simulator bug fix

Security update Kb4499151 specifically resolved Microsoft Visual Studio Simulator issues. Previously, a bug restricted users from starting Microsoft Visual Studio Simulator.

Known bugs

Microsoft acknowledged various issues in KB4499165 and KB4499151. The company warns Windows 8.1 users that the installation of both updates may result in premature termination of a connection to WDS server. 

Furthermore, Kb4499151 may cause unresponsive windows and slow startup issues. Microsoft is currently investigating the issues and will release a permanent fix with the upcoming updates. 

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