Depending on the way that the Internet Explorer Web browser's "Security" settings are configured, the browser may be blocking your access from certain pages. The browser itself (based on information from Microsoft) may have deemed these pages insecure and dangerous, or you may have accidentally blocked the page yourself. You can stop Internet Explorer from blocking websites by going through the program's "Security" settings page.
Open Internet Explorer.
Click "Internet Options."
Click on the "Restricted Sites" icon and then the "Sites" button.
Click on the name of the website that you do not want blocked anymore, from the list of restricted sites. Click "Remove." Click "OK" to save your changes and Internet Explorer will no longer be blocking that specific website.