How to do 80240020 error code after win7/win8.1 upgrade win10

What should I do if 80240020 error occurs after win7/win8.1 upgrade win10? Win7/Win8.1 users who have subscribed to the Win10 upgrade may encounter an 80240020 error message in Windows Update when upgrading the system. This error usually occurs when the system installation file has been downloaded and is ready for installation.

The reason is that according to Microsoft Answers Answers community officials, and this error occurs:

Under normal circumstances, you must first interactive operation by the user to confirm the upgrade through Windows Update, Microsoft Said that because this is the largest software upgrade ever, I hope to provide users with a better user experience. Microsoft has not yet prepared for all devices. It is recommended that users who have not received the upgrade notification wait for a while until the system starts to upgrade.

This issue may occur because many users have previously forced the system to start an upgrade by command without confirming with an upgrade reminder. For users who encounter the 80240020 error message, if you want to upgrade immediately, you can try to modify the registry by:

• Open the run by Win+R, enter regedit to open the registry editor; Br>

• Navigate to

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdateOSUpgrade

• Create a new DWORD (32-bit) value named AllowOSUpgrade on the right, double-click the new value to set its value to 1, as shown below As shown:

modify open Windows update after completion of the inspection system update about it, then you should be able to by clicking on the "start update" button to upgrade the Windows10.

Note: Windows 8.1 users need to open Windows Update in the traditional control panel instead of Windows Update in the Modern settings.