Windows: Edge Update KB4559309 replaced with KB4576754, fixes performance issues

[German]Microsoft has replaced the update KB4559309 for the new Edge Browser released in June 2020 with the new update KB4576754. The background was probably slow starting Windows 10 systems after applying the update KB4559309, but this was not documented in the support article.


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Update KB4559309  from June 2020 slows down systems

Update KB4559309 is used to update the old Edge Browser to the new Chromium-based version and is rolled out since June 2020 for Windows 10 versions 1803, 1809, 1903, 1909 and 2004 (Home and Pro Edition). I had reported within the blog post Windows 10: Chromium Edge are rolled out to user about this update. 

Note: This update is not intended for Windows 10 Enterprise or Windows 10 Pro systems in enterprise environments with WSUS or Active Directory. Users in enterprise environments are therefore not affected by the problems outlined here.

The problem with this update is that installing it can cause collateral damage to Windows 10 systems. I had pointed this out in the blog post Edge Update KB4559309 may slow down Windows 10. Some users noticed after installing the update that the Windows 10 systems booted very slowly. A community moderator at Microsoft Answers then confirmed that the Microsoft Edge development team is investigating the whole thing.

New Edge Update KB4576754

As of August 31, 2020, Microsoft had already released the update KB4576754 für for the upgrade to the new Chromium Edge browser. This update is also available for Windows 10 versions 1809, 1903, 1909 and 2004 in the consumer area (but not for enterprise environments). I had already reported about the update in the blog postWindows 10 Version 2004: Update KB4576754. Microsoft writes within the KB article:

This update replaces previously released updates KB4541301, KB4541302 and KB4559309.

I noticed that, but I didn’t notice anything else from the description of the fixes. The new update KB4576754 should also fix the problem with the slow startup of some Windows 10 systems, as Windows Latest reports.  Maybe it will help the people who are affected by this problem.


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