The installation failed in the first_boot phase

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I've tried installing the update several times, carrying out a huge number of fixes suggested online including a clean boot, disk cleanup, using the DISM tool and nothing seems to be working. Ran update troubleshooter Updated drivers Unplugged all devices except monitor, keyboard, Unable to install Windows 10 update. Searching for this problem, I've attempted the following. Update failing with 0xCx : I've tried multiple times to install this update and it keeps failing with the same error. I checked many forums and tried many things like e.

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For us to isolate the issue, we will need to ask you a few questions: Have you tried all the troubleshooting steps that were provided on this thread? Since when have you been experiencing this issue? Rose Ter, Oct 29, You must log in or sign up to reply here.

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On return to W7 it gives the dreaded error code 0xcx Will be following this thread to see if any possible solution arises. It tries to resurrect the installation, fails, and rolls back to original OS, Windows 7 Ultimate, in my case. Bree, Oct 29, Windows 10 Error code 0xcx Same here, have tried it at least three times to no avail.