I am having the same issue with KB4103727 Windows Update. My error code is 0x80070bc2.
This updates downloads, say they are installed but a restart is required to apply the update which fails.
I have tried pretty much every possible fix in various posts:
- uninstalling the updates, downloaded from the Microsoft catalogue and manually re-installed.
- used the Microsoft diagnostics tool (wu170509.diagcab) to trouble shoot the installer. It said the database is corrupt. Says it has fixed everything.
- I downloaded a tool that resets Windows Update (Wureset Windows 10). Ran the batch file ... then Windows update would go and grab the update again and the cycle repeated ... the update did not install.
Nothing works.
The May 8th Security Update for Adobe Flash Player is also not completing it's install.
My system info:
- HP Spectre x360, Intel Core i7-5500U, CPU 2.4 GHz
- Windows 10 Home - version 1709, OS Build 16299.371