Windows 10: Auto type in password box when windows start

I have recently occurred this situation that whenever I turn my device on, in the password box character start to appear automatically and continuous.

:)

 

Primary Password

Firefox 81.0
Having an issue with the primary password. I start Firefox. I begin typing in the search box and about midway thru the primary password dialogue box pops up. I do not notice and keep typing the rest of my search which ends up in the primary password box. Is there a way to fix this?

My thought is the primary password box should start immediately start with the starting of Firefox or they should stop the auto primary password request and let me manually activate it.

Any suggestion on a remedy?

Ron

 

How to auto login windows 10 if i use Microsoft account?

I didn't solve this by your suggestion. However, i reinstalled windows10, and log in with Microsoft account from start. Then netplwiz works well.

I found a interesting phenomenon. After unchecking the box of netplwiz, and type a wrong password, netplwiz will also exit with no error. Does it mean netplwiz only sotres the password i input and use this for logging in?

I have two hypothesises about netplwiz.

1. auto login feature is a kernel feature, netplwiz just call this feature, the password you need to input after unchecking the box is just for authentication of current user.
2. auto login feature is provided at userspace by netplwiz. the password you need to input after unchecking the box is stored somewhere and netplwiz will use this password to log in windows

At first i think first one is correct, but now it seems that second is correct, am i right?

 

Black Dot and Numbers filled up in the password box and the Notepad

Hello,

There are several ways to troubleshoot sign-in issues in Windows 10. Since the system automatically fills out the password box with black dots and already did a few troubleshooting steps, we suggest creating a new user account to see if this issue will occur
on a new user profile. This will help you check if your current user account is corrupted. To do this, simply follow the steps below:

• 
  Select the Start button, then select Settings > Accounts > Family
  & other people > Add someone else to this PC.
  
• 
  Type a user name, password, password hint, and then select Next.
  

Should you have further questions, please let us know.