Is Windows 10 KB4559309 update slowing your PC/laptop down?


Windows 10 KB4559309 patch for version 1803 to 2004, that brought Chromium-based Microsoft Edge browser is causing serious performance issues, here are some fixes

Microsoft had released its brand new Chromium-based Microsoft Edge browser with the KB4559309 patch. Microsoft released the KB4559309 patch for Windows 10 Home and Pro devices running on versions 1803 to 2004. The patch was meant for Windows 10 home users and brought the new Edge browser to Windows 10 PC and laptops. However, the same KB4559309 patch is causing major performance-related issues for many Windows 10 home users.

Windows 10 users took to forums to complain about the performance issues caused the Windows 10 4559309. After installing update KB4559309, Windows 10 users may face the following problems:

  • Slow boot
  • Failed installation of the update
  • PC slow at random times
  • Wireless network disabled
  • Slow network connection
  • Video and audio freezing
  • Huge memory usage

Microsoft is reportedly working on the fix but there is no plan to patch the performance-related issues.

Windows 10 4559309 performance issue fix/workaround:

One of the users on the Windows 10 forum found that disabling BitLocker fixed his performance issues. While some users claimed that disabling the fast startup cures the slow boot issue.


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"The Internet is the first thing that humanity has built that humanity doesn't understand, the largest experiment in anarchy that we have ever had." Eric Schmidt

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