What is the best way to get out of a Windows Defnder offline loop

[Windows Central Question]

Turned off window update premature to update finish. My Dell laptop pc is stuck in loop. Removal of battery connection does not resolve the condition.

 

[realwarder]

If it is nothing to do with Windows Defender, then recover your PC:

https://support.microsoft.com/en-us/help/12415/windows-10-recovery-options

See: Use installation media to restore or reset your PC, keep your files.

If it really is Windows Defender that keeps restarting, then something to try is:

1) Get into Advanced Startup Options (https://www.lifewire.com/how-to-access-advanced-startup-options-in-windows-10-or-8-2626229) probably method 4,5,6. (Or on some systems power cycling several times at boot will force it to be entered)

2) Disable this option: https://www.bleepingcomputer.com/tutorials/disable-early-launch-antimalware-protection/


NOTE: If you disable the early malware check, I'd upgrade your OS to the latest Windows 10 upgrade (1709) and then re-enable.
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