You can do the following steps if your antivirus liveupdate is not working.
- Check computer’s date and time.
- Check the Language settings (should be English).
- Check whether you are able to visit secure websites like www.symantec.com
- Reset web browser, reset winsoc , flush the DNS, remove unwanted entries from the host file if present and remove temporary files.
- Check DNS poisoning in TCP/IP properties.
- Check whether proxy is enabled.
8. Disabling router firewall and enabling DMZ.
1. Check computer’s time and date.
If
you have a live update issue, the first and foremost thing you need to
check is the date and time of your computer. If the date and time of
your computer is not correct the live update will fail, because the
computer will not be able to synchronize with the live update server. It
will show that no updates available or the live update finish quickly
when you run it but you will see red mark or an alert or exclamation
mark on your antivirus program interface.
Click here if your computer date and time is changing always.
2. Check the language setting.
The
language settings of your computer should be English. If the language
setting is not correct the antivirus will fail to synchronize with the
live update server. To check the language settings,
o Go to Start>Control panel>Regional Language settings (Vary depends upon Operating System).
o In the region and language settings, click on the Administrative tab.
o Click on “change system locale”.
o If it’s not English, then change it to English.
3. Go to secure websites like www.msn.com or www.symantec.com.
If
you are not able to visit the actual page when you visit any secure
websites, it’s sure that your computer is affected. This issue is caused
due to website redirection virus. You will be redirected to some other
websites or web pages if you have website redirection virus. Some redirection viruses can be easily removed and some others are difficult to find.
Click here to know the basic steps that can be done to fix the redirection virus.
4. Reset web browser, reset winsoc, flush the DNS, remove
unwanted entries from the host file if present and remove temporary
files.
Click
here to see the instructions to reset web browser, to reset winsoc and
to flush DNS. You will be able to know about the host file and how to
remove unwanted entries from it aswell.
If
you have a virus infection, it can change the settings in the TCP/IP
properties. In the run box (press windows and R key to open) type as
ncpa.cpl and then press enter. A window will open. Right click on the
Local Area Connection (your Network Interface Card) and click on
properties. Double click on Internet Protocol Version 4 (TCP/IPV4). If you didn’t set any DNS or proxy settings manually, it should look like below,
If
you see any values over there you need click on “obtain IP address
automatically” and “obtain DNS server address automatically”. This
will remove the DNS IP address added by the virus. Some antivirus like
Norton antivirus helps to connect to internet through their DNS servers.
You can configure their DNS settings as well which is safe. To know
more about it follow this link http://nortondns.com/faq/ and http://nortondns.com/ .
6. Check whether proxy is enabled.
If
you are connecting to internet through a proxy server, you need to
configure the same proxy settings in your antivirus program. Otherwise
live update will fail. To check whether you are connected through a
proxy server, click on the below link http://www.lagado.com/proxy-test .
In
some cases due to virus infection the proxy settings will be enabled
and you will not be able to access websites. Your email client may work
or you may be able to contact the technical support of your antivirus
software but you will not be able to access internet. This is caused
because of the proxy settings.
To fix this, follow the below steps,
o Open Internet Explorer browser.
o Go to Tools>Internet Options>Connections>LAN settings.
o You will see 3 small boxes. Uncheck the second and third boxes if checked.
o Check the box which says “automatically detect settings”.
o Click on OK button.
o Now the proxy is removed.
You
can check whether you are able to connect to internet. If you have
removed the proxy by following the above steps you can check whether the
live update is working.
7. Check whether there’s a third party firewall program.
Installing
two antivirus or firewall on a computer is ineffective and one will
block the activities of other. So check whether there’s any antivirus
programs installed on your computer other than the antivirus software
that you are using for your computer.
8. Disabling router firewall, enabling DMZ.
This
is the final step you can do. You can do this if you need to run the
live update urgently and if you don’t have any other way to get the
update. Here we are going to allow direct connection without firewall
for your router which is not safe. But after running the live update you
can reconfigure it back to the previous settings. Below are the steps
to disable firewall and enable DMZ for Linksys router,
· Log
in to your router page. Click here to know how to login (you will see
the command to know IP address of your computer aswell).
· Click on the security tab and disable SPI firewall.
· Click on Application and Gaming and then click on DMZ.
· Click on enabled and give the IP address of your computer.
· Now close the router page and run live update.
If
you aren’t able to run a downloaded file as it says the publisher of
the software cannot be verified or “unknown publisher”, the live update
will also fail. The live update will show as if it has downloaded the
update completely, but the last few KB of the update will not be
downloaded and so the live update will fail while installing the update.
You will see the error message as “failed to install some updates”. You
will have to change the router if this issue is persistent.
In
this case, you need to remove the temporary files first. The unknown
publisher issue will fix if you could connect your computer to another
network (in your office or the internet connection at your friends
home). What you can do is you can download the update separately. Check
under “For dial up” below to know how to download the update separately.
Sometimes running live update again and again will fix the live update
issue.
Note:
The live update won’t work if you disable the DMZ.
For dial up:
If
you have dial-up connection you will not be able to download the update
completely as the download may stop any time due to interruption in the
connection. Most of the antivirus provides a page from where you can
download the update. For example, Norton provides a page to download the
update. Check this link
You
can download the update separately from another computer that has high
speed internet connection. Then you can import or copy it to your
computer using a USB or flash drive or CD. Then install it on your
computer. You can do this if you have installed a fresh copy of
antivirus and running live update for the first time. After installing
the update you can run live update from your computer that has dial-up
connection.
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