Is your Windows Computer slow to start?

Are you getting messages that Windows updates are failing?

Are you constantly seeing the Windows busy spinning icon?

Recently we are seeing a lot of jobs coming into our workshop that appear to be related to and infections but the one thing they have in common, is they have a failed or corrupt of Windows 10 with the error code 80240020.

This is because even if you don’t want to install Windows 10 on your Windows 7 or Windows 8.1 Computer or laptop, Microsoft is pushing out the software (just in case) through daily Windows updates. If this has resulted in a failed or corrupt installation, your computer will keep trying and retrying and retrying to install this software, every day until you fix the issue.

This results in the appearance that your is constantly busy and you notice a decline in performance especially when starting up

Go to “View Update History

\Control Panel\All Control Panel Items\Windows Update\View update history  …… and you may see images similar to these




Luckily there is quite a well documented, tried and tested way of fixing this.

Even if you DO NOT WANT WINDOWS 10, you need to allow Windows Update to complete its download process.

Fix the issue as follows

1. Go into “C:\Windows\SoftwareDistribution\Download” and delete everything in that folder.


2. Now, run the command prompt as an administrator. Type in “wuauclt.exe /updatenow“. you will need Administration rights for this to happen.

If you cannot on the run window with Administration rights. You may need to navigate to c:\Windows\System32\wuauclt.exe and run the application from there, you should be requested for confirmation to run this as an Administrator

3. Go to your Control Panel > Windows Update and your Windows 10 should start re-downloading from scratch

If you do not see the following, you have probably not been successful and will need to try again


4. If the update still fails, try uninstalling KB3035583

Go to Windows Updates -> Install Updates

-> locate KB3035583

Right click on KB3035583 and select “uninstall

Repeat the process from Step 2 above.

To ensure this does not keep happening go to

Windows Update -> Select Updates to Install

and check on “Optional“. If you see the following, right click on the “upgrade to Windows 10 XXXX“, right click and select “Hide update


How old is my Windows PC?


Need more help?

Update: Business as usual for workshop repairs, and onsite support.

If you live in Western Australia, and you need any kind of computer help, please bring your computer to us at 315 Rokeby Road, Subiaco, Western Australia or call us out. You can email us at or call:

08 6118 2601 

Microsoft Silver Cloud Partner

For instant remote control sessions, follow the instructions found on this page

4 comments to “Windows updates failing”

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  1. Len Simpson - September 22, 2015 Reply

    Thanks but I have tried all the above and nothing seems to work. Now have over 30 failures of the upgrade. Very frustrating!!

    • John Kirkby - September 22, 2015 Reply

      Can you forward some screen shots of the updates and their error messages you are getting on failure. We will try and help.

  2. Dave Compton - October 26, 2015 Reply

    Hi – I am in the UK and found this by trawling.
    I followed the steps you gave and it appeared to work – I was offered the Win10 update. But because I was not quite ready to implement it, I ‘hid’ the update. However, I cannot now get back to it. When I click ‘Restore Hidden Updates’, I am told there are no hidden updates.

    Can you help a poor ‘pommie’?

    • John Kirkby - October 27, 2015 Reply

      You can download the latest OS through Windows updates. The procedure is covered in the post, look for the section starting

      1. Go into “C:\Windows\SoftwareDistribution\Download” and delete everything in that folder.

      and follow the procedure. This forces Windows 10 to be reloaded.

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