Have you ever encountered the Windows 10 Pin sign in options not working error?
If yes, dont worry too much.
Refer to this post offered byMiniTool Solution.
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It will show you 2 useful solutions to fix this annoying issue.
you might also give a shot to repair corrupted system files with SFC.
It is easy to fix.

The following part will show you how to solve the Windows 10 Pin sign option not available.
Microsoft has added the passwordless sign-in option to the latest Windows 10 Insiders Preview Build 18936.
Lets go to learn some details on this news.

In this case, you could venture to make some minor changes to the files contained in Ngc.
Delete Ngc Folder
Step 1: Login your Windows 10 with your password as Administrator.
Step 2: Open theFile Explorerwindow, then clickLocal Disk (C:).
Step 3: Now, clickViewon the top and checkHidden items.
Step 4: Navigate to this path:Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft.
Step 5: Find theNgcfolder, then select all the files in it and delete them.
Step 6: Reboot your machine.
Create a New Pin Account
Step 1: Press theWinkey +Ikey to openWindows prefs.
Step 2: ClickAccountand then selectSign-in optionsfrom the left.
Step 3: Under thePINsection, clickAdd.
Step 4: Enter the password for your account and then clickSign in.
Thus, you’re able to venture to repair the user profile withSystem File Checker (SFC).
SFC is a great built-in tool in Windows.
Here is a quick guide on how to use SFC.
Step 1: Typecmdin theSearchbar, clickCommand Promptand then selectRun as administrator.
Step 2: Now, typesfc /scannowand pressEnterto launch the command.
SFC will start to check all missing or corrupted system files and then automatically help you fix them.
If you are experiencing this error, dont be panic.
Try the methods mentioned in this post.