There is a closed thread on here titled "During One Step Update, HSA Bank (hsabank.com) asks for verification every time" that is the same problem that I have, except the resolution provided that apparently worked for that particular customer did not work for me. I've tried the suggestion in that post twice already but continue to get prompted on each new "One Step Update" to enter my HSA Bank (hsabank.com) verification code.
If I do a second update in the same QUICKEN session immediately after the one where I entered the verification code, it's usually fine and will not ask. But next time I go into QUICKEN, it asks me again to enter hsabank.com's verification code.