Hi @Ralph ,
KB4556813, KB4534271, and KB4565511 are cumulative updates that may contain security improvements and fixes for issues within the .NET Framework and Windows. If they are not installed, your system may be missing important patches.
Run Windows Update
to see if any .NET Framework-related updates are available, particularly the ones you’ve mentioned. Sometimes updates are skipped, and manually running Windows Update
may bring them up.
You can also manually download the missing updates from the Microsoft Update Catalog.
Best Regards.
Jiachen Li
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