KB4487044 fails to install for some and disables Windows Defender

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Updated onOctober 9, 2019

updated onOctober 9, 2019

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The latestWindows 10 v1809update isKB4487044. Theupdatedoesn’t bring any new features to the table, focusing on fixing some of the technical issues triggered by previous patches.

At the same time, KB4487044 also brings some issues of its own. While these problems are not that frequent, they might affect some users. In this quick post, we’re going to list all thebugsreported by users after installing thisupdate.

KB4487044 issues

1. KB4487044 install fails

Some usersreportedthat their computers failed to install the update with error 0x80070003. Here’s how one user describes this problem:

Updates (KB4487044) downloaded ok to 2 computers, but during installation, they both got anerror message: We couldn’t complete theupdates. Undoing changes. Don’t turn your computer off…Looking at the View update history on both computers: 2019-02Cumulative UpdateforWindows 10version 1809 for X64-based Systems (KB4487044) failed to install on 02/12/2019 – 0x80070003Thought Microsoft fixed the updates problem.

If you’re experiencing the same error, use the troubleshooting guides listed below to fix it:

2. Windows Defender Offline is no longer working

After installing KB4487044, it disabled Windows Defender leaving it with the Red X, and not possible to scan. This was never an issue prior with any CU installed on Retail 17763. Putting it back online, updating and back working.

If you’re experiencing this problem, try restart Windows Defender. If the problem persists, you can either uninstall theupdateorinstall a third-party antivirus software.

As you can see, users reported only two bugs after installing KB4487044. There is also a third issue affecting this patch, but Microsoft already added it to the list of known issues.

3. Japanese date and time issues

Microsoft already acknowledged this problem and explained that after installing thisupdate, previously abbreviated Japanese date and time strings no longer parse. As a workaround, you need to tweak your Registry in the following manner:

A permanent fix for this issue will be available next month.

How has your KB4487044 experience been so far? Let us know in the comments below.

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KB4487044 issues#

1. KB4487044 install fails#

2. Windows Defender Offline is no longer working#

3. Japanese date and time issues#

With KB5043178 to Release Preview Channel, Microsoft advises Windows 11 users to plug in when the battery is low

Copilot in Outlook will generate personalized themes for you to customize the app

Microsoft will raise the price of its 365 Suite to include AI capabilities

Death Stranding Director’s Cut is now Xbox X|S at a huge discount

Outlook will let users create custom account icons so they can tell their accounts apart easier

KB4487044 fails to install for some and disables Windows Defender

KB4487044 issues

1. KB4487044 install fails

2. Windows Defender Offline is no longer working

3. Japanese date and time issues