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Windows 7 SP1 installation. Net Framework 4.7.2 failed

XosaTag 975 20 Reputation points
2025-11-08T22:44:06.49+00:00

I am repeatedly failing to install both .NET Framework 4.7.2 and 4.8 on a Windows 7 SP1 system, with the error consistently pointing to certificate problems. This issue persists even after running the NetFxRepairTool.exe. What is the most common or likely root cause for certificate validation failures during .NET Framework installation on Windows 7 SP1, and what specific steps should I take to resolve the certificate chain validation (e.g., manually updating root certificates or specific security updates)?

Windows for home | Previous Windows versions | Performance and system failures
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  1. Sin-D 5,415 Reputation points Microsoft External Staff Moderator
    2025-11-09T05:24:00.03+00:00

    Hi XosaTag 975,

    Thanks for reaching out to Microsoft Q&A Forum. I understand that you're facing issue with .NET Framework installation failing.

    Please try to update your system with key security updates that add SHA-2 code signing support and root certificates. You can check all the available updates through Window Update. After that, restart your computer and retry installing your .NET Framework.

    Please also make sure your system date and time settings are correct.

    The initial response might not address the problem. So, if your problem persists or you need any assistance or you want to follow up with me, feel free to ask me by clicking "Add Comment" or "Post Answer" if you cannot add comment. This helps me can read your follow up. Thanks for your effort.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". 

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    Best regards.

    1 person found this answer helpful.

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