14 DAY TRIAL // Microsoft has finally released a new cumulative update for Windows 10 version 1809, or October 2018 Update.
Cumulative update KB4482887 increases the OS build number to 17763.348, and it comes with important bug fixes and performance optimizations.
First and foremost, Microsoft says this update enables Retpoline on certain devices, which could improve the performance of the Spectre variant 2 mitigations. The majority of Meltdown and Spectre patches were said to be causing a more or less noticeable impact on system performance, so with this cumulative update, the footprint on CPU and memory usage should be reduced.
Then, Microsoft fixes a several-months-long issue that was causing the Action Center to show up on the left side before being displayed on the right side.
This bug was also corrected in preview builds of Windows 10, and now Microsoft has migrated it to the production builds as well.
Two known issues
KB4482887 also resolves several of the issues that were acknowledged in the previous cumulative updates, including the Microsoft Access 95 bug and the Internet Explorer glitch that blocked the browser from loading images that have a backlash in their relative source path.
There are two different known issues in this cumulative update, one of which is the Internet Explorer authentication problem that was first confirmed in February.
The second is a so-called Error 1309 when installing or uninstalling certain types of MSI and MSP files, and Microsoft says that while it works on a fix, you can very well ignore it the error.
For the time being, this cumulative update appears to install correctly on all Windows 10 devices, and as I said before, it looks like Microsoft has indeed resolved the previous problems that caused some of these updates to fail. KB4482887 is available via Windows Update on all Windows 10 version 1809 devices.