Windows Update KB2901983 code 13EC and KB890830 code 643

Computer runs Windows 7 Professional SP1

Windows Update for 13 January 2015:

KB2901983 installs .NET 4.5.2 - fails with error code 13EC unknown error

KB890830 installs Windows Malicious Software Removal Tool - fails with code 643 unknown error

Fixit 5023 does not stop the above failures.

KB947821 System Update Readiness Tool also failed to install.

Please advise.

 

Question Info


Last updated November 27, 2018 Views 34,161 Applies to:
Answer

This problem was resolved by David Dor, whose post I found previously but which I cannot find during this visit:

Hello OcieHudson,

Today, I'm the same problem on my VM Windows 7 Professionnel SP1.

KB2901983 installs .NET 4.5.2 - fails with error code 13EC unknown error

I have downloaded the NDP452-KB2901907-x86-x64-AllOS-ENU.exe and I have looking a spacedisk problem. I have resized my harddrive and now the KB2901983 is installed correctly.

Best regards and have a nice day.

David

I searched for the file, which is an offline installer for .NET 4.5.2. Installing it also resolved the problem with installing the Windows Malicious Software Removal Tool.

Best regards and kudos to David Dor.

--- Ocie

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Answer

my error code was 643 but I downloaded the web installer but setup failed.  I then downloaded the offline installer....it did not have the English version so I am lost.

HELP

The .NET offline installer is available in English and many other languages:

https://www.microsoft.com/en-in/download/details.aspx?id=42642

However, the error code 643 "unknown error" was output for the Windows Malicious Software Removal Tool -- not for the .NET update. All I know is that after I installed the .NET update with the offline installer, Windows Update downloaded and installed the WMSRT for Jan. 2015.

However, it took quite a while to install the WMSRT before Win Update reported that it was successful. Maybe it doesn't report success until the tool is executed and completes its run.

--- Ocie

2 people were helped by this reply

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