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According to Microsoft, the company fixed a problem that was causing all Microsoft Edge tabs operating in IE (Internet Explorer) mode to become unresponsive if one of the active websites showed a modal dialog box after issuing a window.

After applying the KB5014019, KB5014023, and KB5014021 optional preview cumulative updates, the issues with IE mode affect computers running Windows 11 (version 21H2), Windows 10 (versions 20H2, 221H1, and 21H2), as well as Windows Server 2022.

According to Microsoft, when a website shows a modal dialog box after these Windows updates have been installed, IE mode tabs in Microsoft Edge can cease responding.

Microsoft is using Known Issue Rollback to help users

A modal dialog box is a form of dialog box that requests input from the user before allowing access to other areas of the website or app.

Microsoft has resolved this problem using Known Issue Rollback (KIR), a feature of Windows that enables users to undo problematic non-security updates installed by Windows Update. The update is available on all consumer and unmanaged enterprise devices within a day of being pushed via KIR.

Users can also restart affected Windows devices to expedite the delivery of the solution to their machines.

The fixes are available

Administrators must install and set a particular KIR Group Policy linked to the systems’ Windows version to fix this IE mode tab problem in Microsoft Edge on impacted enterprise-managed devices.

The two Group Policies are available for download:

Open the Group Policy Editor on your domain controller, navigate to either the Local Computer Policy or the Domain Policy, and select the Windows version you want. This is the step-by-step process for deploying a Known Issue Rollback through Group Policy.

Microsoft’s support website has comprehensive instructions on how to deploy and configure KIR Group Policies.

Also read: Microsoft is about to launch Autopatch, an alternative to Patch Tuesday.