Microsoft Windows Defender software error

An issue has arisen with Microsoft Windows Defender software. The Beta 2 version of the software ‘expired’ on 31/12/2006 and rather than displaying a message to this effect, the system just crashes with an error code of 0x800106BA and 0x80081B90.

If you are affected by this problem, please follow the instructions as described below:

There are 3 steps to this procedure:

Remove the old software - this step explained

Install the new software - this step explained

Protect RealVNC - - this step explained

 

Each step explained...

Remove the old software

Click Start > Control Panel > Add/Remove Programs.

In the resulting dialogue box, scroll down and click on 'Windows Defender'.
Click the 'Remove' button.

The system will ask you to confirm your decision to remove the software. Click 'Yes' and follow any further instructions until the removal is complete.

 

Download the new software

Firstly, close everything on your computer except for this web page.

You can download the latest version of Windows Defender free of charge from the Microsoft web site:
http://www.microsoft.com/downloads/details.aspx?FamilyId=435BFCE7-DA2B-4A6A-AFA4-F7F14E605A0D&displaylang=en

At this page, you’ll either have a ‘Continue’ button or a ‘Download’ button just above the yellow area of the screen. If the button is labeled ‘Continue’ then you will need to run through the Microsoft product validation procedure. The screens will guide you through this, but if you struggle with anything please give us a call. Once you’ve done the validation, the button will change to ‘Download’.

Click the ‘Download’ button and save the file to somewhere familiar so that you’ll be able to find it later.

Once the download has completed your web browser will usually give you the option to run the file. If not, then find the file you’ve downloaded and run it by double-clicking it.

The first screen of the installation procedure is entitled “Welcome to the Installation Wizard for Windows Defender”. Click ‘Next’.

The next screen asks you to validate your copy of Microsoft Windows. Click ‘Validate’.

The following screen asks you to accept the terms of the licence. Click the option “I accept…..”, and then click ‘Next’.

On the next screen, put a tick in the top box entitled ‘Use recommended settings’, and then click ‘Next’.

The following screen should default to ‘Complete’. Ensure that it does (and change it if it doesn't), and click ‘Next’.

Click ‘Install’ to commence the installation.

Once the installation has completed, the "Windows Defender Install Complete" screen will be displayed. Ensure there is a tick in the box for "Check for updated definitions and run a quick scan now", and click 'Finish'.

 

Protect RealVNC

Your Computer Department operates a remote support system. To allow you to use this system, we install an application called RealVNC onto your computer. Due to the remote control nature of this software, Windows Defender classes it as potentially malicious and will mark it for removal.

Since we are aware of the existence of RealVNC, we know we can authorise it's use. To protect RealVNC from uninstallation, please follow this procedure. Please note that if you do not have RealVNC installed, then it will not be reported by Windows Defender.

Following the installation of the updated product, the system will have done a scan of your computer and will now display a results screen.DO NOT PRESS THE BUTTON LABELLED "Remove All" !!! Instead, underneath it you will find a blue link called "Review items detected by scanning". Click this link.

Next screen, on the line marked "RealVNC" click the drop down box where it says "Select an action" and select "always allow".

Click "Apply Actions"

On the RealVNC line under the heading 'Action', it should now say 'Always Allow' and under the heading 'Status', it should now say 'Succeeded'

You may now close the Windows Defender application window. The procedure is complete.

 

 

If you are a client of Your Computer Department and have any difficulty with this procedure, or you would prefer us to run this for you then please give us a call on 0115 8240825 or 01332 650660. (A charge for support may apply depending on your maintenance agreement)