) during those installations because the system already has a newer or conflicting version of .NET 3.5 integrated. Microsoft Learn 1. Download and Locate the File
: Attempting to run a "Windows6.1" file on Windows 10 or Windows 11 will result in an immediate error stating, "The update is not applicable to your computer."
A: This is a normal characteristic of how certain .NET Framework updates were packaged. The absence of a publisher name does not mean the update is invalid or malicious. KB958488 is a genuine Microsoft update regardless of this display anomaly.
Microsoft Knowledge Base tracking number for this specific .NET 3.5 patch. The package build version. x64 Compatible only with 64-bit hardware architecture. .msu Download Windows6.1-kb958-488-v6001-x64.msu
A system reboot is often required to finalize the integration of the framework updates. Troubleshooting Common Issues
The simplest method requires no command‑line expertise:
Windows Update Standalone Installer will open and ask if you want to install the update. Click and follow the on-screen prompts. Restart your computer if required. 3. Troubleshooting Installation Errors If the installation fails, consider the following: ) during those installations because the system already
Allow the progress bar to finish. If prompted, click to complete the configuration. Method 2: Command Line Installation (Advanced / Unattended)
Review the architecture list. Look closely for the item matching or Windows Server 2008 R2 for x64-based Systems .
| Component | Meaning | Standard ? | |-----------|---------|-------------| | Windows6.1 | Targets Windows 7 / Server 2008 R2 (NT 6.1) | ✅ Standard | | kb958488 | Knowledge Base article number | ⚠️ Suspicious – real KB numbers have 6–7 digits | | v6001 | Version/build tag (6001 = Windows Vista SP2/Server 2008) | ❌ Mismatch – Windows 6.1 + Vista build number | | x64 | 64-bit architecture | ✅ Standard | | .msu | Microsoft Update standalone package | ✅ Standard | The absence of a publisher name does not
Open your web browser and go to the official Microsoft Update Catalog Site. In the top-right search bar, type and press Enter.
– A real KB958488 exists, but it is for Windows Vista (not 6.1/Windows 7). It addresses a WDS or print server issue. The filename you gave appears to be a manipulated or corrupted version of that.