If you are using a modern version of Windows (Windows 10 or 11), you do need this file. These operating systems include much newer versions of the .NET Framework (4.8 or 4.8.1) that already incorporate the fixes provided by this legacy update.
System administrators managing "air-gapped" servers (computers not connected to the internet for security reasons) cannot rely on automatic updates. They must manually download these packages, verify their integrity, and deploy them. Similarly, for those maintaining "retro" workstations or specialized industrial equipment that requires Windows 7 to function, these files are the lifeblood that keeps aging hardware secure and functional. Conclusion Download Windows6.1-kb958-488-v6001-x64.msu