Windows 10 Latest Updates Are Slowing Down PCs But Here Are Some Temporary, Working Fixes

The last few Cumulative Updates, be it security or optional, appear to be bringing down the performance of Windows 10 computers. None of the updates are available to all the general Windows 10 users and neither have most users downloaded and installed them. Hence it is a bit difficult to exactly ascertain which of the updates or all of them, are contributing to the slower performance. Nonetheless, there are few methods that users, who have downloaded the updates and experienced a general slowdown, can try and restore the earlier performance.

The last three Windows 10 Cumulative Updates, notably the KB4535996, KB4540673, and possibly KB4551762 are being blamed for slowing down the performance of Windows 10 machines. We had previously reported about multiple problems caused by the optional Cumulative Update KB4535996, which was primarily intended to fix the Windows 10 Search platform. Although many users have reported the searches are being populated with relevant and needed information, the update has reportedly caused quite a few new problems, including system instability, slower boot-up time, erratic FPS, audio stutters, etc.

Which Non-Security, Optional Cumulative Update Is Causing Performance Issues With Windows 10?

Windows Laptops

Over the last few weeks, starting January 2020, Windows 10 has received optional, non-security Cumulative Updates KB4535996, KB4540673, and KB4551762. Windows 10 KB4535996 update has been out since February 27. The update being optional, not all users have it installed yet. Additionally, KB4535996 is a preview of the March update, and if users don’t have it installed on their PC, they will receive fixes and improvements introduced by KB4535996 in Windows 10 KB4540673.

If both the abovementioned updates are not installed on the Windows 10 PC, all those fixes are included in KB4551762. Simply put, the KB4551762 is essentially a collection of all the bug fixes and performance improvement features that were sent out separately through KB4535996 and later in KB4540673. Hence it is a bit difficult to pinpoint exactly which Cumulative Update gives rise to the issues. The most prominent issue being reported by users, is a slower boot, while a few others have claimed one of the updates even brings down the overall performance of Windows 10 machines.

Experts indicate the culprit is most likely a buggy driver or faulty software that is hindering the boot process. It is quite likely that Windows 10 machines, after getting the buggy update, may have to go through a number of additional processes to mitigate the issues and boot successfully.

It is not clear if Microsoft is working on fixing the reported issues. In fact, the company hasn’t even officially acknowledged any of the issues that quite a few users are complaining about on multiple forums and social media platforms. However, it is quite likely that Microsoft could soon acknowledge at least some of the issues and promise to fix the same in the next series of cumulative updates. Meanwhile, several users affected by the issues have attempted to fix them.

How To Address Poor Performance And Slow Booting Of Windows 10 If Caused By Latest Cumulative Update?

Windows Diagnostics

Users who have face issues after installing Cumulative Updates KB4535996, KB4540673, or KB4551762, claim one of the updates causes random system slowdown, boot delays, and other uncommon problems. Such users have advised checking if Windows 10 Update platform has installed any of the updates. Experts indicate the simplest and most direct workaround is to uninstall the aforementioned updates and check if the performance of Windows 10 machine improves.

Windows 10 users can head to the Start menu and search for ‘Settings’. In Settings update, go to Update & Security > View Update History. In the update history, check if KB4535996 is installed. If yes, then uninstall it from the Control Panel. Incidentally, KB4535996 is an optional patch and it will not show up again when a user checks for updates the next time.

If KB4535996 isn’t present in the list of installed updates, then look for KB4540673 and uninstall it if present. The KB4551762 is the last update that should be touched. Moreover, users should reinstall KB4540673 if the overall performance remains slow.

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Alap Naik Desai


A B.Tech Plastics (UDCT) and a Windows enthusiast. Optimizing the OS, exploring software, searching and deploying solutions to strange and weird issues is Alap's main interest.
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