Windows 10: Please help! Install error with Microsoft Defender, Install error - 0x80070643

Security Intelligence Update for Microsoft Defender Antivirus - KB2267602 Version 1.403.43.0 - Current Channel Broad; Install error - 0x80070643

:)

 

Windows Defender KB4052623 impossible to install, error 0x80070643

Some ideas here:
Fix Windows Update or Installation Errors on Windows - Driver Easy

MS comment from Defender team here (older):
On Windows Defender Definition Update error 0x80070643 Solved - Windows 10 Forums

Doesn't seem anything useful on tenforums for that error number in the last 3 months.

 

Windows Update multiple Install errors/Failure (error 0x80070643)


Hi All,

I'm wondering if anyone can help.

I have upgraded to windows 10 for a few weeks now and over the last couple of days it has stopped installing any windows updates, the error code that pops up is (error 0x80070643)

It's also stopping me from installing some other programs but not all.

I have tried restarting the computer, Nothing
I've tried restarting wuauserv service, Nothing
I've tried the troubleshooter for windows update, it says problems were found and they were fixed.
I have also cleared the cache for update downloads from the following folder:
C:\Windows\SoftwareDistribution\Download

In the Windows update page it seems to take forever to install the updates and then throws out the following:
There were problems installing some updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help:
Security Update for Microsoft ASP.NET MVC 4.0 (KB2993928) - Error 0x80070643
Security Update for Microsoft Silverlight (KB3080333) - Error 0x80070643
Security Update for SQL Server 2008 R2 Service Pack 2 (KB3045313) - Error 0x80070643
Update for Microsoft Visual Studio 2010 Tools for Office Runtime (KB3001652) - Error 0x80070643

Note: this is after clearing the cache in the above folder location.

If anyone can help that will be great as it seems to be affecting installation of other programs.

 

Windows Update Error 0x80070643 for Windows Defender

Still having issues updating Windows Defender as of 4/3/17, 12:30pm CDT on 10 Pro winver 14393.969 . Windows Update shows Error 0x80070643 but manual update via Defender GUI installed latest virus/spyware definition 1.239.713.0. Re-running Window Update shows everything is up to date.

It's been at least 4 days since this glitch first appeared on my machines. Any thoughts on why Microsoft is delaying a fix? Perhaps to include in next Patch Tuesday 4/11?