Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to sign in issue in Windows 11.
Please restart your PC in Safe Mode:
Restart your device by selecting Power > Restart. When you see the sign-in screen, hold the Shift key while you select Power > Restart.
After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > Startup Settings > Restart.
Reset your PIN :
If you're having trouble using your PIN to sign in to Windows 11, try resetting your PIN.
- On the sign-in screen, select I forgot my PIN below the PIN text box. If there are multiple accounts on the PC, choose the one you need to reset.
- On the Enter your password screen, type the password for your Microsoft account, and then select Next.
- On the Help us protect your info screen, choose to receive your security code either as a text or email message. If you select text, type the last four digits of your phone number, and then select Send Code.
- When you get the code as a text or email message on a separate device, enter it on the Enter the code you received screen, and then select Next.
- In the Set up a PIN dialog box, enter your new PIN and confirm it. Your new PIN is now set.
Reference :
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