I get the above error code when trying to install group A cumulative June and July Win 7 X64 updates. I have tried.
System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821)
Reset Component store
SFC (found no issues)
DISM: “DISM.exe /Online /Cleanup-image /Restorehealth” gave error 87
Also would not install the latest July NET framework update
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