This is one of the known issues for build 10149:
I must be extremely lucky to have run into this 'very rare situation'. Has only else had this problem? I waited over an hour to unlock but still unable to. I am waiting at least 2 hours before trying again. Hopefully it will work next time otherwise I will need to use the recovery tool again.
There is a very rare situation where you are unable to unlock your phone after entering your PIN and it keeps letting you type even though you entered your pin correctly. If you hit this ? leave the phone alone 1-2 hours before trying to unlock again. This is caused by a TPM issue that could get worse and require you to reflash if you get into this state and power off the phone.
I must be extremely lucky to have run into this 'very rare situation'. Has only else had this problem? I waited over an hour to unlock but still unable to. I am waiting at least 2 hours before trying again. Hopefully it will work next time otherwise I will need to use the recovery tool again.