You can allow Pop-ups from specific websites by adding the site to the exceptions list. If you enable this policy, users ...

You can allow Pop-ups from specific websites by adding the site to the exceptions list.

If you enable this policy, users will not be able to add or remove websites to the exception list.

If you disable or do not configure this policy setting, users will be able to specify websites in the allow pop-ups exceptions list.

Note: You can allow a default list of sites which will be allowed to open pop-up windows regardless of the Internet Explorer process's Pop-Up Blocker settings by enabling "Pop-up allow list" policy.