windows 8.1 blank password problem

**albator** · July 6, 2014

Hi,

I am not currently using windows 8, but I did some changes on my stepdad pc.

I did install the 8.1 update, changed the boot default to metro (his request) and then

configured to autologin without asking for a password.

The problem is that the password was changed to blank (nothing) and it worked well for a fews days.

Now the pc is booting and asking for a password and we cannot login ?

My experience with windows 2000,xp, and vista/7 never gave me such strange results.

May someone explain to me how to fix this ?

**DosProbie** · July 6, 2014

Well there are some commercial Windows password unlockers but you should be able to remove or reset it manually here:

http://www.isunshare.com/windows-8-password/windows-8.1-password-reset-when-forgot-it.html

~DP

**albator** · July 7, 2014

Thank, i knew about this, but do you know what could have caused the isssue ?

**DosProbie** · July 7, 2014

No, I never use a logon password since i like booting straight to the desktop and the same with Updates which have a way of messing up the system more that helping.

~DP

Edited July 7, 2014 by DosProbie

**Tripredacus** · July 7, 2014

I have seen some instances where a password will expire after 30 days. Which is why I keep this little command around:

wmic useraccount where "name='UserName'" set PasswordExpires=false

However, I have not seen this happen on any systems I have personally used, just client PCs. I also do not use blank passwords.

**adamt** · July 7, 2014

Thank, i knew about this, but do you know what could have caused the isssue ?

Are you sure the password is still blank? Could somebody have changed it?

Once you get back in again, check your security log for event ID 4738.

**adamt** · July 7, 2014

I have seen some instances where a password will expire after 30 days.

Usually, with an expired password, you would still be able to login, but you'd be prompted to change it.

**jaclaz** · July 7, 2014

Shameless plug (actually a half-plug ) but check if PassPass has been updated to cover your OS (I am not sure if Update 1 has changed the involved .dll ):