Windows defender will not update my defenitions are out of date

Hi Anon,
The 0x800106ba error may occur after Windows Defender is updated due to the computer's inability to update the Windows Defender firewall. It may not have applicable permissions needed for the update, or it may not have the files necessary for updating itself.

The Fix

Set Windows Defender to Automatic - You can set the Windows Defender service to Automatic, Disabled or Manual. Setting it to automatic might solve the problem. Follow these steps:

1. Click Start > type services in the Search box > click Services in the Programs list.
2. If you are asked for a Password before you continue, then enter the password > click Continue.
3. Double-click Windows Defender, and click Automatic in the start-up box > click OK.

Uninstall and reinstall Windows Defender - If the first procedure did not help resolve the problem, try un-installing and then reinstalling Windows Defender. Due to the fact that Windows Defender is a Windows component, we will use AppWiz to un-install it from the computer. Follow these steps:

1. Press Windows Key + R > type appwiz.cpl > Press Enter
2. Click Windows Defender > click Remove
3. Follow the prompts to uninstall Windows Defender

Let me know how you go!

The Windows Defender software constantly scans your computer for threats such as spyware that may slow down your computer or try to steal personal information. If the software wasn't installed properly or is conflicting with other programs running on your machine, Windows Defender may not work correctly. To repair the software you either need to download the latest update available for the program, or you need to completely uninstall and reinstall Windows Defender.

Restart your computer's operating system. Double-click the "Windows Defender" icon in the system tray at the lower-right end of the screen. Click the question mark icon at the top of the Windows Defender screen and choose "Check for Updates." Select "Continue" if you are running Windows Vista. Wait for the updates to finish installing and click "Scan." Click "Stop Scan" if the problem persists. Click the question mark icon again and select "Exit Windows Defender." Click "Yes" to confirm you want to close the software. Open the "Start" menu screen and select "Control Panel." Select "Uninstall a Program" in Windows 7 or Windows Vista, or instead choose "Add or Remove Programs" in Windows XP. Click the "Windows Defender" entry and select "Uninstall." Choose "Yes" and restart the computer after the program is removed. Navigate to the Windows Defender installation webpage (see Below). http://www.microsoft.com/downloads/details.aspx?FamilyId=435BFCE7-DA2B-4A6A-AFA4-F7F14E605A0D&displaylang=en&mg_id=10134 Click "Download" and double-click the Windows Defender installation file when it downloads to your hard drive. Go through the onscreen installation instructions. Open the "Start" menu and choose "All Programs." Select "Windows Defender." Click "Scan" to start a new scan for malicious software. Hope this helps

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The Windows Defender software constantly scans your computer for threats such as spyware that may slow down your computer or try to steal personal information.

If the software wasn't installed properly or is conflicting with other programs running on your machine, Windows Defender may not work correctly.

To repair the software you either need to download the latest update available for the program, or you need to completely uninstall and reinstall Windows Defender.

Restart your computer's operating system.

Double-click the "Windows Defender" icon in the system tray at the lower-right end of the screen.

Click the question mark icon at the top of the Windows Defender screen and choose "Check for Updates."

Select "Continue" if you are running Windows Vista.

Wait for the updates to finish installing and click "Scan."

Click "Stop Scan" if the problem persists.

Click the question mark icon again and select "Exit Windows Defender."

Click "Yes" to confirm you want to close the software.

Open the "Start" menu screen and select "Control Panel." Select "Uninstall a Program" in Windows 7 or Windows Vista, or instead choose "Add or Remove Programs" in Windows XP.

Click the "Windows Defender" entry and select "Uninstall."

Choose "Yes" and restart the computer after the program is removed.

Navigate to the Windows Defender installation webpage (see Below).

http://www.microsoft.com/downloads/details.aspx?FamilyId=435BFCE7-DA2B-4A6A-AFA4-F7F14E605A0D&displaylang=en&mg_id=10134

Click "Download" and double-click the Windows Defender installation file when it downloads to your hard drive.

Go through the onscreen installation instructions.

Open the "Start" menu and choose "All Programs."

Select "Windows Defender."

Click "Scan" to start a new scan for malicious software.

You might find some interesting security tips here.

http://support.microsoft.com/ph/11952

Hope this helps

that means you'll have to purchase new anti-virus program since you're using a 2008 edition. Every year new viruses are emerging that's the reason why many companies are updating their database and software yearly to be able to catch up with them.

just a little help :)

You can no longer update Windows Defender. Windows Defender has been replaced by Microsoft to Microsoft Security Essentials.Type in your browser " Windows Security Essentials Wikipedia"where you will find all the information Re. Windows Defender/Microsoft Security Essentials.Hope this helps you.
Regards Bill

Try checking your Security Center, make sure everything is Ok or On.

If you are using two or more firewalls, I highly recommend that you use one, because it will conflict. Make sure it is up to date, has downloaded the latest updates to keep it high performance.

Otherwise, if it does not work, then you will need to take the battery out and use the AC adaptor instead.

On your own head be it, Open w/defender then goto TOOLS - OPTIONS & uncheck all the boxes.
Then goto w/Firewall and ensure defender is not in use there. By disabling defender you are also interfearing with microsoft updates for other programes other than just defender. Remember vista is still a baby and is constantly being updated,new service packs are being created day by day to improve the "ultimate operating system" lol yeah right. I disabled mine last year and had nothing but trouble.firewall wouldnt let things in/out ,internet kept crashing.I eventually had to uninstall the nightmare that is NORTON anti virus. and find a program that would work well along side defender and the one i recomend is AVG. its free,easy and defender loves it.Defender is a major part to the whole windows operating system.I dont think you can fully disable it as you will find out eventually.

Backup your important info, then order your recovery disks through the manufacture and do a COMPLETE restore...