Hello BARBARA PEARSON,
From your description, it sounds like you're trying to update your Brother HL-L2405W printer rather than Windows itself.
Brother confirms that its firmware update tool may request the printer's administrator password, which is different from your Wi-Fi or Windows password.
If that's the screen you're seeing:
- Check the back or bottom of your Brother printer for a label marked Pwd.
- Enter the 8-character password shown there, paying attention to uppercase and lowercase letters.
- If you've previously changed the printer's administrator password, you'll need to use the changed password instead.
Brother's official instructions:
However, you also mentioned seeing a Wi-Fi passcode screen. If the password above doesn't apply, could you share a screenshot of the screen asking for the password? Please hide any passwords or personal information.
That should help us identify which password is actually required.