A plaintiff who is served with a 90-day demand must file a note of issue, or, before the default date, move either to vacate the demand or to extend the time to file. A non-compliant plaintiff must demonstrate a justifiable excuse for its failure to timely respond, as well as a potentially meritorious cause of action.
HSBC Bank USA, N.A. v. Williams, NY Slip Op 08554 (2d Dep't November 27, 2019)
Here is the decision.