Monday, January 4, 2010

How To Fix Definition Update Error For Windows Defender?

You can receive a message that is about to the definition updates in one of the two following circumstances. All it happens when you use Windows Defender.
The possibilities are:
•    When you start using Windows Defender, you will receive a message that prompts you to check for the definitions.
If this describes your situation, try Method 1 given in this article.
•    When you start to check for the updates in Windows Defender, you will receive an error message that states that the definition updates can’t be checked, downloaded or installed.
If this describes your situation, try Method 2 given in this article.
This article will be very useful for those who have more computer experience or for the beginners.

RESOLUTION

Method 1: Check for updates in Windows Defender

If you want to check for the updates in Windows Defender use the following steps.
•    If the Windows Defender is not opened, Start it by clicking Start, Program and then click Windows Defender.
•    Then check for the new definitions by clicking Check for Updates Now.



Method 2: Manually install update definitions and verify Windows Update files

Usually Microsoft delivers Windows Defender updates through Windows Update, Automatic Updates and Windows Server Update Service (WSUS). However sometimes, you may receive error messages due to the problems with these services instead with problems with Windows Defender. If you want to determine the source of the problem, try to install manually the update definitions. If it is possible, install the update definitions, because the problem is most likely caused by a Windows Update issue.

Step 1: Restart your computer if it is necessary

You can switch back to Windows Defender and note down the error code on the Home Page. If the error message of Windows Defender has the code 0x80240016, restart your computer. It the error message doesn’t have 0x80240016 follow the following step 2.
Step 2: Manually install the update definitions

Follow the following steps to install manually the update definitions.
•    Visit the Security Portal from the following Microsoft Websites.
If you have English version of Windows, visit here.
If you want to have more information about the Security Portal for non-English version of Windows visit here.
•    In order to download and install the appropriate definition updates, follow the steps given on the above pages.
•    If there is any difficulty to install the definition updates manually or if you still receive error messages about the definition updates in Windows Defender, there may be some other issues occurring. In such situations, visit the Microsoft and ask for the solutions.
•    At the same time, if you are able to install the update definitions manually, the problems is caused by a Windows Update problem, therefore you have to continue with the step 3.

Step 3: Verify that you have all the required Windows Update files

To verify that you have all the required Windows Update files, follow these steps:

Before installing anything, you should verify that you have all of the required Windows Update files. Follow the steps.
•    Open the Windows Update Website using the following steps
1.    Click Start, and then click Control Panel.
2.    Depending on which Control Panel view you use, Classic or Category, do one of the following:
o    Click System, and then click the Automatic Updates tab.
o    Click Performance and Maintenance, click System, and then click the Automatic Updates tab.
3.    Click the option that you want. Make sure Automatic Updates is not turned off.
After that, install all of the recommended updates. For additional troubleshooting information, visit Microsoft.
Method 3: Advanced troubleshooting

Verify that no Windows Update, Automatic Updates, or Windows Server Update Service (WSUS) problems are occurring

You can verify that no Windows Update, Automatic Updates or Windows Server Update Service problems are occurring.

Windows Vista, Windows Server 2008, Windows 7
•    Scrutinize the Windowsupdate.log file for error messages in order to view the log file.
•    Click Start and in the search box type %windir%\windowsupdate.log and press Enter.
•    Then enter the keywords that describe the problem on the Windows Help and How To” web page.
Microsoft Windows 2000, Windows XP, and Windows Server 2003
1.    Examine the Windowsupdate.log file for error messages, To view the log file, follow these steps:
a.    Click Start, click Run, type %windir%\windowsupdate.log in the Open box, and then press ENTER.
b.    For more information about how to read the Windowsupdate.log file, click the following article number to view the article in the Microsoft Knowledge Base:

Here if you want to scrutinize the error messages
•    Click Start, click Run, type %windir%\windowsupdate.log in the Open box, and then press ENTER. Or else visit the Microsoft site.
•    Or on the Options Web Page, enter the keywords that describe the problem.
Here we have given all a few possible error messages of Windows Defender.
Case 1: You receive the following error message when you try to start Windows Defender:






Check for new definitions.
Definitions allow Windows Defender to detect the latest harmful or unwanted software and prevent it from running on your computer.

Case 2: You receive one of the following error messages when you try to check for updates, to download updates, or to install updates from the Windows Update Web site:






The program can’t check for definition updates
Error found: Code error_code

Note The error_code that is included in these messages represents the error code that you receive, and this error code might vary. The most common error codes are 0x8024402f or 0x80240016. However, you might receive a different error code, such as one of the following:

•    0x8024402c
•    0x80240022
•    0X80004002
•    0x80070422
•    0x80072efd
•    0x80070005
•    0x80072f78
•    0x80072ee2
•    0x8007001B

Prevention Tips

As we said, Windows Defender features an option to check automatically for the new definitions. If you want to turn on the option to check for the information automatically, follow these steps.

•    Start Windows Defender.
•    Then click Tools and then Choose options.
•    After that, under Automatic scanning, click to select the Automatically Scan my computer check box.
•    Then click to select Check for updated definitions before scanning check box, and then click Save.
•    Now, if you’re prompted for an administrator password or confirmation, just enter the password or provide the confirmation.

As Windows Defender works with the Windows Automatic Updates feature to install the latest definitions automatically, turn on Automatic Updates for Windows, using one of the following methods.

Windows XP and Windows Server 2003
1.    Go to Start, click Run, type wuaucpl.cpl in the Open box, and then click OK.
2.    Go to Automatic, and then click OK.
Windows Vista, Windows Server 2008, Windows 7
1.    Go to Start, Choose All Programs, and then Choose Windows Update.
2.    Now, click Change settings.
3.    Then, click Install updates automatically (recommended).
4.    After that, under Recommended updates, select the Include recommended updates when downloading, installing, or notifying me about updates check box, and then click OK.

Now, if you’re prompted for an administrator password or confirmation, just enter the password or provide the confirmation.

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