Microsoft engineers bungle Windows 10 update KB4549951; Causes BSoD, Network issues


If you download Windows 10 KB4549951 update, it will cause random crashes, BSOD, Wi-Fi and Bluetooth problems in your PC/laptop

Microsoft is known for its buggy updates and if user reports are to be believed, its engineers have not learned anything from the past. Microsoft recently released the new cumulative update ‘KB4549951’ for Windows 10 on 14th April 2020. However, as expected, Microsoft’s inept update handling continues with the latest KB4549951 update for Windows 10 like its predecessors.

Features of Windows 10 KB4549951 Update

The Windows 10 KB4549951 update was released by Microsoft engineers for PCs/laptops running on Windows 10, version 1909, and Windows 10, version 1903. The updates were supposed to improve security for the following products :

Updates to improve security when using Microsoft Office products.
Updates to improve security when Windows performs basic operations.
Updates to improve storing and managing files.

The Windows 10 KB4549951 update also addresses the following issues :

  • Addresses an issue that prevents certain apps from installing if they are published using a Group Policy Object.
  • Addresses an issue that prevents a wired network interface from obtaining a new Dynamic Host Configuration Protocol (DHCP) IP address on new subnets and virtual LANs (VLAN) after wired 802.1x re-authentication. The issue occurs if you use VLANs that are based on accounts, and a VLAN change occurs after a user signs in.
  • Security updates to the Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Cloud Infrastructure, Windows Virtualization, Microsoft Graphics, and other Microsoft services.

Bugs in Windows 10 KB4549951 Update

The Windows 10 KB4549951 update was supposed to make life easier for Windows 10 PC/laptop users. But as the Microsoft engineers have bungled the update, it is reportedly causing many serious problems like BSoD, random hanging of the system, malfunctioning Bluetooth, WiFi, connectivity problems, etc. The Windows 10 KB4549951 update users have said that they get error codes that include 0x8007000d, 0x800f081f, 0x80073701, etc.

According to a report from WindowsLatest, many Windows 10 users reported that the update was stopping them from keeping their devices updated. Other users noted that the update breaks WiFi, and Bluetooth connectivity. Many users said that the update resulted in random system crashes and BSOD (Blue Screen of Death). Some users also complained about poor system performance.

A Windows user in the Microsoft forum reported that,

“I updated (KB4549951) my Windows 10 on 15.04.20. After updating, Bluetooth stops working. Now Bluetooth is not showing in Device Manager. I tried to uninstall Updates but still, it is not showing. What to do now. My Laptop supports Bluetooth,”

Another person emailed his problems to Windows Latest stating that,

“I wanted to let you know that after installing this update “KB4549951? my device no longer has a Bluetooth adapter according to Windows (which of course is false, since it still worked yesterday before installing this damn update,”

How to fix the Windows 10 KB4549951 Update issues

The Update apparently affects a small percent of Windows 10 users. Therefore Microsoft officially has neither acknowledged the issue nor released a fix. If the bug has affected your PC/laptop, you can uninstall the KB4549951 update. To uninstall the update, one needs to head to the “Windows Update” option in the “Update and Security” section in the Settings app. Here you need to find the update in the “Uninstall updates” section inside the “View update history” button.

  • Go to Settings and click “Update and Security.”
  • Choose “Windows Update” and open “View update history.”
  • Click “Uninstall updates.”
  • Locate the latest update and uninstall it.
  • Lastly, Reboot your device.

In case the issues persist, users can use Windows System Restore or a Windows 10 system reset. If the Windows System Restore also doesn’t work for you, you may need a fresh reinstall of the Windows 10 operating system.


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