Windows update reports error 80071a91 in the Event log (system log)

1. Run (in an elevated cmd) “fsutil resource setautoreset true C:\ ” (change c: if your Windows is installed on another drive)

2.
a)      Press Windows Key + X, select control panel
b)      Change the ‘view by’ option on the top right to ‘Larger icons’
c)      Select the Troubleshooting option and click ‘view all’ on the left pane
d)      Run the ‘Windows update ‘troubleshooter.

3. Reboot PC