Upon login, a window appears requesting login information for an old share that has been deleted.
This problem appears at the opening of each session.
deleted recent connections
checked items that need to open on login
restarted the SMB service, and
checked into Time Machine
None of the above have resolved my issue.
I am running macOS High Sierra 10.13.5.
This discussion: How can I remove old SMB connections? didn't help me.