[Yugiro]

I have just updated my Lumia 930 with Windows 10 Mobile TP build 10536.1004 and have updated all apps, restarted and downloaded some of my apps back. I have also put a 6 characters PIN on the sign-in option. After using it for some time, I can not unlock my screen using the PIN number. I know the PIN is right, I have been using the same PIN to the same phone, and have tried opening it before this happens. My lockscreen seems stuck and the phone won't open. I have done soft-reset for the nth times but to no avail.

Is there a work around?

[Yugiro]

I have re-flashed the phone and now downloading the new builds again. I sure hope this fix the error.

[PirateSunil]

It can be reset through your online windows account as well. Where all registered devices are shown.
I think its the LOCK phone feature.

(Unable to check as if now)