I have just installed Symantec AntiVirus and installed the updates ok, but when i come to scan the scan engine returned error 0x20000003 comes up any solutions Charmaine

1. Scan your computer by using any updated antivirus program.
2. Try to install and download the "Antimalwarebytes" (freely available)
3. Try to update "Antimalwarebytes".
4. Scan your computer using the "Antimalwarebytes".
5. Follow the same procedure for "SuperAntiSpyware" as you done for "Antimalwarebytes".
6. Delete all the internet temporary files.
http://antivirus.iyogi.net/pc-scan

If your anti virus will not update try to access an online trojan sccnner Symantec has one. If you can not access the site or complete the scan you most likely have Win32.Worm.Downadup.Gen.
It prevents any access to any antivirus software and windows updates it also turns off any installed antivirus updates. Removal is actually really simple just go here
http://www.bdtools.net/download-removal-tool.php

You got a virus that designed to disable Norton. Do yourself a favour, uninstall Norton. Here a link to an excellent free piece of software for home users. Download it, install it, update it, schedule a boot-time scan, you wil be amazed by just how much it finds & it wont slow your system by being too labour intensive like symantec. http://www.avast.com/

in a command line? it looks like you did not put the path of the eicar file that you're scanning...

when u power up laptop press F8 key then enter ion safe mode.
then remove node 32 antivirrus
may be your computer is virus infected
if possible downlaod avast antivirtus from google search then install and update it.
tehn scan computer in boott ime schedule then it removes alll virus.also remove temp files fromk computer
go to start emnu then run then type "chkdsk /r"
in run
then press "y"
then restart the computer then it fix the error on hardddisk

Download and run the removal tool found here
Reboot and re-install the anti-virus program. If your subscription has expired we can recommend a very good free anti-virus program.

Get rid of symantec and get antivirus right from Microsoft called Live One Care . I had allsorts of problems with Vista including my email until I got One Care.

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Disable System Restore (Windows Me/XP).
2. Update the virus definitions.
3. Run a full system scan.
4. Delete any values added to the registry.

For specific details on each of these steps, read the following instructions.

1. To disable System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles:

• How to disable or enable Windows Me System Restore
• How to turn off or turn on Windows XP System Restore

Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article: Antivirus Tools Cannot Clean Infected Files in the _Restore Folder (Article ID: Q263455).

2. To update the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

• Running LiveUpdate, which is the easiest way to obtain virus definitions.
  
  If you use Norton AntiVirus 2006, Symantec AntiVirus Corporate Edition 10.0, or newer products, LiveUpdate definitions are updated daily. These products include newer technology.
  
  If you use Norton AntiVirus 2005, Symantec AntiVirus Corporate Edition 9.0, or earlier products, LiveUpdate definitions are updated weekly. The exception is major outbreaks, when definitions are updated more often.
  
  
  
• Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them.

The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions. For detailed instructions read the document: How to update virus definition files using the Intelligent Updater.

3. To run a full system scan

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
   
   For Norton AntiVirus consumer products: Read the document: How to configure Norton AntiVirus to scan all files.
   
   For Symantec AntiVirus Enterprise products: Read the document: How to verify that a Symantec Corporate antivirus product is set to scan all files.
   
   
   
2. Run a full system scan.
3. If any files are detected, follow the instructions displayed by your antivirus program.
4. Delete the autorun.inf file from writeable removable devices, if necessary.
   

Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode. Once you have restarted in Safe mode, run the scan again.


After the files are deleted, restart the computer in Normal mode and proceed with the next section.

Warning messages may be displayed when the computer is restarted, since the threat may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [FILE PATH]
Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

4. To delete the value from the registry
Important: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified subkeys only. For instructions refer to the document: How to make a backup of the Windows registry.

1. Click Start > Run.
2. Type regedit
3. Click OK.
   
   Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.
   
   
4. Navigate to the following registry subkeys:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
   HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows\"load"
   
   
5. In the right pane, delete any values associated with the worm.
   
   
   
6. Exit the Registry Editor.

i need a serial number for nero 66.21.4

this error is due to some file missing in symantec antivirus. u try to reinstall it