Use Pop-up blocker on a Windows XP SP2-based computer
Windows XP Service Pack 2 (SP2) introduces new behavior in Microsoft Internet Explorer that affects web pages with pop-ups. You may find that when you click on a link to open it that it has been blocked by the Pop-up blocker. You will see the icon of a page with a red circle with a slash in the Information Bar in the lower right corner of the Internet Explorer window. This is the Pop-up blocked notification icon.
If this is a site you trust and need access to, you may allow this site access 'through' the Pop-up blocker by adding it to the Allowed Sites list. You may do this in two ways. Use either one or the other method listed below.
Note: To temporarily open link, you can right click the link and choose to Open in New Window; or, you may CTRL - click on the link.
Use the Always Allow Pop-ups from this site
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Open Internet Explorer.
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Attempt to open the web site or link. The site will be blocked from opening.
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Click once or right-click on the Pop-up blocked notification icon in the Information Bar. You should see this list of choices.

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Select Always Allow Pop-ups for This Site....
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Click Yes.
Add the URL for the OWA Web site to the Allowed Sites list Manually
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Open Internet Explorer.
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From the Tools menu click Pop-up Blocker, and then click Pop-up Blocker Settings.
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In the Address of Web site to allow box, type the address for the site.
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Click Add, and then click Close.
Configure the Pop-up Blocker to warn you that a page has been blocked
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Open Internet Explorer.
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From the Tools menu click Pop-up Blocker, and then click Pop-up Blocker Settings.
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Click either or both of the Notification options to provide you with additional feedback that a Pop-up has been blocked. e.g.Play a sound when a pop-up is blocked, Show Information Bar when a pop-up is blocked.
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Click Close.