Error Code: 0x663

Started when I tried to install upgrade for .NET Framework 3. It failed and I found directions that told me to uninstall all versions of .Net Framework and then reinstall them one by one. I got .Net Framework 1.1 installed and when I went to Microsoft Updates I found an upgrade for.Net Framework 1.1 SP1. I tried to install that upgrade and got the above error (0x663).

Question Info

Last updated March 25, 2018 Views 3,282 Applies to:

Hi slborne,



1.    Do you have any security software installed on the computer?

2.    Are you able to install all other updates on the computer?



I would suggest that you reset the Windows update components to default and later try to install the update.

How do I reset Windows Update components?


If the above step fails then I would suggest that you manually install the update using the below link and check if it works.

Microsoft .NET Framework 1.1 Service Pack 1


Hope this helps!

Halima S   - Microsoft Support.

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