Is there a set of circumstances where a dead battery on a laptop will trigger a Sophos Lockout?

Question

I have taken on the responsibility for unlocking Sophos locked devices. The first six or eight laptops that I've received arrived for Sophos ulock with dead batteries. Given that it takes numerous bad entries to lockout a device - and users say that's not happening - is there a set of circumstances where a dead battery on a laptop will trigger a Sophos Lockout?

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FormerMember · Accepted Answer

Hello MWestbrook, 
 Yes a dead battery or replacing the battery will typically cause the machine to go into a protection state where it locks out the user. You'll likely get asked for a challenge/response or recovery key depending on your encryption method.

MarkWheeler · Answer

One other thing to double-check is that the CMOS battery has not been completely drained and reset the computer clock. 
 If the date / time range on the machine is not within the validity period of the user's certificate for POA login, you will see the error that you're describing. 
 Resetting the data / time to be current will fix this.