Error Code 643 Windows Update encountered an unknown error

Microsoft .NET Framework 1.1 Service Pack 1
Published: 5/12/2009
I have installed this update about 20 times now... Please help me to solve this problem. Thank you!!!
 

Question Info


Last updated September 16, 2018 Views 229,808 Applies to:
Answer

http://support.microsoft.com/default.aspx/kb/923100/

When you try to install an update for the .NET Framework 1.0, 1.1, 2.0, 3.0, or 3.5, you may receive Windows Update error code "0x643" or Windows Installer error code "1603


Cheers.
Mick Murphy - Microsoft Partner

239 people were helped by this reply

·

Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.

Answer

When installing updates using Windows update or Microsoft Update you may receive Error 0x643 or 0x80070643 (23 Oct-09)
http://support.microsoft.com/kb/976982 

       
--
~Robear Dyer (PA Bear)
Microsoft MVP (Windows Client) since October 2002

115 people were helped by this reply

·

Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.