Hello: I know Event Viewer is a Pandora's Box much of the time, but two of the three errors have a noticeable effect on the machine's shutdown time (prolonging it) and the third concerns me as it appears in conjunction with another Windows service.
The culprits are Event IDs 10016 and 7031 (SyncHost) plus ID 10010, the server being the AUTaskHandler and the error coincides exactly with Windows Modules Installer Worker starting its task.
Version is 10586.218, is this current for the Home version? Haven't gotten April's updates yet though Settings says up to date. W10 was installed not 10 days ago from a System Restore to W8.1.
Looked everywhere else--nothing fruitful. Would this involve a registry modification(s)? Systems File Checker, malware scans and DISM scanhealth were negative.