@Fairviewdjc 

Half of our team is still running QBD 2021 Enterprise on Win 10 v20H2 with no issues till now. We dare not upgrade to 21H2 or Win 11. Consider to clean install your QBD.

https:// quickbooks.intuit.com/learn-support/en-us/install-or-update-products/clean-install-quickbooks-desktop/00/201980

Another option, install the 2015 or 2019 QBD trial license to trigger it to install IE. This workaround didn't work for everyone.