Certain versions of QuickBooks require Microsoft Internet Explorer version 6.0 (or later). During the Acctivate installation, we sometimes update the QBFC component of QuickBooks which can prompt this version check. The error in its entirety is below:
Acctivate requires Microsoft Internet Explorer 6.0 SP1 or later. Please install it, then restart this setup program after the Internet Explorer setup restarts your computer.
QuickBooks has a community post outlining the steps to resolve the error received. Check it out here. After making the changes outlined in the article and rebooting, restart the Acctivate installation. Contact our support team if you have any questions.