In Windows Internet Explorer 7 or Windows Internet Explorer 8 , the following error message may be displayed if the website you are trying to access uses both IPv4 and IPv6 as Internet Protocol versions.
Internet Explorer cannot display the webpage.
An IP address list is returned from the DNS server when IE connects to a webpage. The Internet Explorer tries to use the first five IP addresses received from the DNS in order to establish a TCP connection.
In order to resolve thisproblem, the following registry key should be added to the registry to change the number of connection attempts made by Internet Explorer.
Note: This section contains steps that instruct you how to modify the registry. However, incorrect modifications of the registers might lead to serious problems. Hence, follow these steps carefully. It is recommended to back up the registry modifying it. This enables you to restore the registry if a problem occurs.
Note: Modification of these values affects the connection attempts made by all applications using WinInet.dll.
1. Go to Start, and type regedit in the Search Programs and files box.
2. If prompted by a User Account Control (UAC) dialog box, click on Yes.
3. In the left pane of the Registry Editor window, go to either of the following registry keys given for different platforms:
For x86-based computers:
To change the machine-wide connection attempts:
To change the user-specific connection attempts:
For x64-based computers:
To change the machine-wide connection attempts for Internet Explorer 32-bit:
To change the user-specific connection attempts for Internet Explorer 32-bit:
To change the machine-wide connection attempts for Internet Explorer 64-bit:
To change the user-specific connection attempts for Internet Explorer 64-bit::
4. Right click on Internet Settings , move the mouse pointer to New and click on DWORD (32-bit) Value.
5. Type ConnectRetries in the New Value box, and hit ENTER.
6. Select ConnectRetries, and click on Modify.
7. Select Decimal in the Base area. In the Value data box, type 10, and click on OK.
Note: Setting 10 might not come into effect depending on the network environment in use. In this case, keep on increasing the value until the error is eliminated.
8. To exit Registry Editor, click on Exit in the File menu.
9. Restart Internet Explorer to apply the change.
Note: Depending on the network environment, performance may be negatively affected if the ConnectRetries value is set to a very large number.