Let’s break down what this should be, what it actually is, and the risks involved. If you remove the stray hyphen ( 958-488 → 958488 ) and the odd v6001 segment, you land on KB958488 – a real Microsoft update from October 2008 / early 2009.
A suspicious filename – Windows6.1-kb958-488-v6001-x64.msu – has been observed in unofficial download sites, forums, and outdated driver bundles. Download Windows6.1-kb958-488-v6001-x64.msu
It's important to clarify upfront: with that exact string. Let’s break down what this should be, what
When in doubt, leave it out. Have you seen this or other malformed KB filenames? Contact our security team. what it actually is
