Hello Bob Currer,
Thank you for posting in Microsoft Community forum.
To change the data field on the Windows security login screen to request a username instead of an email address, you can follow these steps:
- Press the Windows key + R to open the Run dialog box.
- Type "secpol.msc" and press Enter to open the Local Security Policy.
- In the left pane, navigate to Security Settings > Local Policies > Security Options.
- In the right pane, scroll down and find the "Interactive logon: Do not display last user name" policy.
- Double-click on the policy to open its properties.
- Select the "Enabled" option and click OK.
- Close the Local Security Policy window.
After completing these steps, the Windows security login screen will no longer display the email address field. Instead, it will display a username field where you can enter your username.
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Haijian Shan