Hi Vardhan

Go to Start>Control Panel>Symantec LiveUpdate

Go to Update Cache and remove the downloaded updates.

For FTP and HTTP settings set it as the internet Explorer.

Under General Tab select Intractive mode and the set the error level to Normal.

Close it and then go to Start>Run>LUALL and click ok

Follow the instructions and check if you are able to download the updates or not.

Otherwise give the correct error Code.

Warm regards

Sumit Bose