Windows 7/2008 R2 Service Pack 1 fails with 0x800f0a12 - The Windows Servicing Guy - Site Home - TechNet Blogs - 0 views
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Scott Beamer on 05 Mar 11You might encounter an issue during the installation of SP1 for Win7/R2 where the installer exits with: 0x800f0a12 This is due to the automount policy for your machine being set to disable. We block the service pack installation in these cases because we need to be able to write information to the BCD store during install and with automount turned off, we are not able to.