When updating your Windows 10 PC to the Anniversary Update, you may get this error: 0x80240031. If you can create an ISO for 14915 using the ESD file at C:$Windows.~BTSourcesInstall.esd (fyi, it is a hidden folder, created by Windows Update.), you could mount that and run setup.exe to upgrade. You might be better off waiting for the next build to be flighted to Insiders.
|Windows 10 Error 0x80240031 Fixed!!!|