[Proven] Fix for Windows 10 upgrade error 80240020 and C1900208
Having problems installing the latest Windows 10 upgrade? Try these steps to solve it! Worked for error code 80240020, C1900208 and similar codes. Read on for more info.
Registry path
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdateOSUpgrade
Before you continue with these steps, make sure to check that you have reserved your Windows 10 upgrade from the “Get Windows 10” app. Also, please do a backup before continuing, as we will not be responsible for any damages or whatsoever caused by this tutorial.
Background information: Microsoft released Windows 10 on 29 July for those who reserved the upgrade previously. However, as Microsoft wanted a smooth upgrade for Windows 7 and 8.1 users, they chose to release it in waves instead. Hence, most PCs actually did not get this upgrade on 29 July itself, but rather on a much later date (hours or even weeks, according to Microsoft). If you visit the “View installed updates” page on your PC, you might see failed Windows 10 installs, with error codes such as 80240020, C1900208, 8024xxxx (where x denotes a number). If you are impatient of waiting and want to install Windows 10 immediately, follow our steps to install it instantly. However, as with all registry tweaks, it contains a risk that you might brick your PC if you change it incorrectly, it is strongly recommended to do a backup of your PC first before tweaking and installing Windows 10 using this method.
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