ExTS Admin AWS Posted January 9, 2013 ExTS Admin Posted January 9, 2013 I am trying to install the latest security update for the .NET framework, KB2742596. The installation fails and I get error code 0x643. How do I fix this? View this thread Quote Need computer support? Then why not join Extreme Tech Support. Register here We are members helping other members. Please return here where you may be able to help someone else. After all, no one knows everything and you may have the answer that someone needs.
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