IE11 has had security issues for years and MSFT abandoned it for EDGE going now 7 years, the fact that QB includes financial services means that someone in the risk and compliance division at QB was asleep at the wheel.  QB team better have a plan to extend a free license to for the QB2022 version for all current users of QB2020 and QB2021.  They can't blame this on windows 11 because IE11 is literally on its the last gasp.