“Last night I updated my Windows 10 Pro using KB4559309. Since then my computer performance has absolutely tanked. My startup time is probably triple. Loading any window has a few seconds delay. I attempted to uninstall the update. However, Windows tells me that it is required and cannot be removed. This update has essentially rendered my brand new computer useless. Please help!” - Quoted from Microsoft Community
Recently, Microsoft has released a new update for the new Microsoft Edge for Windows 10 version 1803, 1809, 1903, 1909, and 2004. It’s KB4559309, which replaces previously released updates KB4541301 and KB4541302 and will be downloaded and installed automatically from Windows Update.
According to some Windows 10 users, this update could make their computers start and perform more slowly. FPS may drop significantly especially when playing games, which may also seriously affect the game experience for game players.
There are also users who failed to start the system normally after installing the KB4559309 update. Every time they started, a blue screen was displayed and the system was prompted to repair automatically, but the repair cannot be completed.
If you are one of these affected users, don’t worry. The slow computer issue can be resolved.
Generally speaking, the easiest way of resolving update issues is to uninstall the update. But this method doesn't seem to work with Update KB4559309. Therefore, to troubleshoot the slow PC issue caused by Update KB4559309, you may need to revert back to the previous version of Windows 10 or block this new Edge update.
This is also one of the most effective ways to deal with update issues. If you’ve created a restore point, you can directly use the system restore feature to roll back your system. This post is for your reference: How to Use System Restore to Fix Windows 10 Issues.
To get rid of the slow computer issue caused by the Edge Update KB4559309, the second method you can try is to block the update by modifying the Registry. Follow these steps:
Step 1. Type “regedit” into the search box on the taskbar and then select the top result for Registry Editor to open it.
Step 2. Navigate to this path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.
Step 3. Right-click on the Microsoft folder, select New, and then select Key.
Step 4. Name it “EdgeUpdate” and hit Enter to save the changes.
Step 5. Right-click on the new “EdgeUpdate” key that you just created and select New, then select DWORD (32-bit) Value.
Step 6. Name it “DoNotUpdateToEdgeWithChromium” and hit Enter.
Step 7. Double-click on DWORD and change the value from 0 to 1, then click on OK.
Step 8. Reboot your computer. And the update should be blocked.
That’s it. If you have any questions about how to fix the slow computer issue caused by Windows 10 Update KB4559309, please leave your comments below.
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