I just ran into a problem installing the KB4074588 update on Windows 10 and would like to share how I solved the problem. The error code for the failed installation was 0x80070bc2.
The problem started when Windows Update reported that KB4074588 was available with the “Awaiting restart” status.
After restarting, I got the “We couldn’t finish installing updates” notification message.
When I want back and checked for Windows updates, KB4074588 started to download again and reported “Awaiting restart”. This loop kept going on and on…
When I checked the update history, I could see that update failed with error code 0x80070bc2.
The problem seems to be that a Windows service called TrustedInstaller, or Windows Modules Installer is not configured to start automatically after a reboot. If it doesn’t start up automatically after the reboot, it does not finish the update.
So, here’s how I solved the KB4074588 and 0x80070bc2 problem:
- I went into Windows Update and check for updates and waited until the status said “Awaiting restart”.
- Then I opened the Services list and and located “Windows Modules Installer” and changed Startup type to Automatic. Remember to click the OK button.
- Then I restarted the machine. After logging in and waiting for a minute or so, the update kicked in and displayed the following:
- Then I restarted the machine again, and verified that the KB4074588 was successfully installed:
Hope this helped you finish the KB4074588 update.
Please let me know if this worked for you too, or if you had to use some other procedure to get the update installed.