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  • Many reports of errors when trying to install the latest .NET patch on Win7 systems with Extended Security Updates enabled

    Posted on May 12, 2020 at 14:48 Comment on the AskWoody Lounge

    Looks like a clunker.

    @BobT reports:

    KB4556399 (Security and Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1) is failing with error 643 for me and many others on the MyDigitalLife forum.

    W7 Ultimate x64.

    And sure enough, MDL is lit up. See the lengthy list of problems starting here.

    Bottom line: Even if you’ve paid for Win7 Extended Security Updates, wait for MS to re-issue KB4556399.

    Susan edit:  This appears to only fail if you have used the bypass script.  On a Windows 7 with an ESU key it installs just fine.