Policy
Turn off configuration of pop-up windows in tabbed browsing
This policy setting allows you to define the user experience related to how pop-up windows appear in tabbed browsing in Internet Explorer. If you enable this policy setting, the user cannot configure pop-up windows in tabbed browsing. You must specify one of the following values: 0: Let Internet Explorer decide. 1: Force pop-up windows to open in new windows. 2: Force pop-up windows to open on new tabs. If you disable or do not configure this policy setting, Internet Explorer uses the user's setting for pop-up windows in tabbed browsing.
dd1b90a4d664 NoTabBrowsingPopups Registry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Internet Explorer\TabbedBrowsing\PopupsUseNewWindowHKCU\Software\Policies\Microsoft\Internet Explorer\TabbedBrowsing\PopupsUseNewWindow Policy notes
This policy setting allows you to define the user experience related to how pop-up windows appear in tabbed browsing in Internet Explorer. If you enable this policy setting, the user cannot configure pop-up windows in tabbed browsing. You must specify one of the following values: 0: Let Internet Explorer decide. 1: Force pop-up windows to open in new windows. 2: Force pop-up windows to open on new tabs. If you disable or do not configure this policy setting, Internet Explorer uses the user's setting for pop-up windows in tabbed browsing.