The "Users and Passwords" icon has disappeared.  I can still access
users and passwords from the CMD prompt (control userpasswords).  I've
tried restoring a System State backup, but no luck.

Can anyone tell me where to look for a fix for this?

Ken

Try this:

Open 'Regedit' (registry editor)

Navigate to:

HKEY_CURRENT_USER\Control Panel\don't load

Check to see if any .CPL filenames are there. For example: 'nusrmgr.cpl'

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