There are some occasions when your antivirus software might display an error code, such as “0x80070424”.
This can occur for a number of different reasons, but most commonly when there is a problem installing updates.
What you need to do
We’ve listed some common error codes displayed by Microsoft Security Essentials below, and what they mean, and where you can find additional support.
| Error code | Possible reason for error code displaying | Support resources / what you need to do |
|---|
| 0x80070002 | This error code may indicate there was a problem checking for updates | Refer to this article for detailed troubleshooting instructions |
| 0x80070005 | This error code may indicate that you do not have the correct privileges to continue with this action; you may need to log on as an administrator | Refer to this article for detailed troubleshooting instructions |
| 0x80070643 | This is a generic error code, and may indicate an undiagnosed problem with your security software | Reboot your computer, and attempt the action you were trying to perform again |
| 0x8004FF06 | This error code may indicate that you currently have a newer version of the software installed; before you install an older version, you will need to uninstall the installed copy | Refer to the following articles for instructions on how to uninstall a program:Then re-install your program by following the manufacturer’s instructions |
What this scenario does not cover / related references:
This article only covers error codes displayed from Microsoft Security Essentials. If your error code relates to another product, see the table below for some common error codes that you may encounter when using Microsoft Security software, or check the forums to see if you can get relevant help there:
| Error code | Possible reason for error code displaying | Support resources / what you need to do |
|---|
| 0x80070424 | This error code may indicate there is a problem installing updates | Refer to this KB article for detailed troubleshooting instructions |
| 0x800700df | This error code may indicate that the file you are trying to download exceeds the allowed limit and cannot be saved, so you may need to increase your file-download limit | Refer to this KB article for detailed troubleshooting instructions |
| 0x800705b4 | This error code may indicate that there is a problem with your antivirus updates | Refer to this article for detailed troubleshooting instructions |
| 0x4ff02 | This error code may indicate that malware has modified your antivirus, so you may need to uninstall then reinstall your antivirus software | Refer to the following articles for instructions on how to uninstall a program:Then re-install your program by following the manufacturer’s instructions |
| 0x80080005 | This error code may indicate that your computer is not responding properly | Refer to this KB article for detailed troubleshooting instructions |
| 0x80070070 | This error code may indicate that you don’t have enough disk space on your computer to install updates | Refer to this article for detailed troubleshooting instructions |
| 0x8007042C | This error code may indicate there is a problem with your Windows Firewall | Refer to this KB article for detailed troubleshooting instructions |
| 0x80240016 | This error code may indicate that there is another installation in progress, so you may need to wait a moment for this install to complete | Refer to this article for detailed troubleshooting instructions |
| 0x8024400a | This error code may indicate there may be a connection problem between your computer and the Windows servers | Refer to this article for detailed troubleshooting instructions |