amitava saha::This issue may occur if proxy or firewall settings are configured incorrectly amitava saha

amitava saha::This issue may occur if proxy or firewall settings are configured incorrectly.
In this case, the connection on the client computer to the windows update servers fails.
To resolve this issue, use the following methods in the order in which they are presented.
If method 1 does not resolve this issue, go to method 2.
Method 1: remove characters from the proxy exception list, and then clear the proxy cache to do this, follow these steps, as appropriate for the operating system that you are running.
Windows 2000, windows xp, and windows server 2003 open internet explorer.
On the tools menu, click internet options.
Note if the menu is not available in the internet explorer window, press the alt key on the keyboard to display the menu.
Click the connections tab, click lan settings , and then click advanced.
Delete any entries in the exceptions section, and then click ok.
Click start , click run , type , and then click ok.
Type the following commands.
Press enter after each command.
Try to install the updates again.
On the tools menu, click internet options.
Note if the menu is not available in the internet explorer window, press the alt key on the keyboard to display the menu.
On the connections tab, click lan settings , and then click advanced.
Delete any entries in the exceptions section, and then click ok.
Click start , and then type in the start search box.
In the search results list, rightclick cmd.
Exe , and then click run as administrator.
Type the following commands.
Press enter after each command.
Try to install the updates again.
To do this, follow these steps: open internet explorer.
On the tools menu, click internet options.
Note if the tools menu is unavailable in internet explorer, press the alt key to display the menu.
On the connections tab, click lan settings.
Click to select the automatically detect settings check box, and then click ok.
Try to install updates again.
Any security software still installed?
A possible reason for this problem is that you have conflicting security software installed fully or partially on the pc.
Remove all other security software from the pc.