Fix error 80240020 when upgrading to Windows 10

So you heard the news and decided to update to Windows 10 but your Windows Update threw an 80240020 error? No problemo, you are being time-blocked by Microsoft. Do the following for the quick fix:

1. Open up your Date & Time settings and disable update/synchronise with the internet
2. Change the date to the 30th of July
3. Navigate to c:\Windows\SoftwareDistribution\Download and delete the contents of this folder
4. Open up a Command Prompt window and enter the following:

wuauclt.exe /updatenow

Now the Windows 10 update should be streaming down and installing in no time.