Tip If you have installed the IE7:

1.Sometimes may fail to install - no error message - right-click to download the IE7 installation file, select Properties, then select "Unblock."
       

2.Try run the installation in safe mode with network support.
3.Review documents:

        % Windir% \ ie7beta3_main.log
        % Windir% \ ie7beta3.log
        % Windir% \ ie7beta3Uninst.log

  You may see 'Access Denied' error, or write error. If you see this error, please check the permissions of the registry key, according to the instructions shown in msfeed.dll error. Important note: This may be done several times, because the key problems arise, the one-time, that is, the key will be different in each attempt, until all the problems, the key is found and repaired.
4. The installation of the wrong reference msfeeds.dll

   Our testing has shown that the key issue of the different sources for different users. Any HKEY_CLASSES_ROOT \ main source of error may be a msfeeds.dll. The documents you need to review what key updspapi.log be affected in the end, you try to install. You will see "Access Denied" error.

   IE team has posted to confirm this proposal is:
   http://blogs.msdn.com/ie/archive/2006/03/27/562265.aspx

5. Windows Genuine Advantage validation is an integral part of, IE's installed capacity. If you have a copy of Windows is not genuine, you will not be able to install the trial version.

6. Error message: on the IE7 must be uninstalled from the user's account or the installation of IE7's gold or failure of reinforced concrete installation - no specific error message.

   Enter key:
   HKEY_CURRENT_USER \ Software \ Microsoft \'s Internet Explorer.

   Right-click the Internet Explorer, and select new DWORD. Name, the value of InstalledByUser. A new DWORD value should be 00000000.

7. The RSS function, at least Microsoft XML Parser (MSXML) 3.0 in Service Pack 5 (SP5).