Like mentioned above, since Microsoft servers are overloaded right now, you may encounter 80240020 error again.
Microsoft also allows its clients to install updates on computer without connecting the Internet as well other alternative solutions and programs to install updates.
Windows updates include several kinds of updates, such as security updates and critical updates that fix system vulnerabilities against malware or security exploits.
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So you tried the force upgrade method for downloading Windows 10 free upgrade?
It worked well for downloading, but once download was finished, you were dreaded with error 80240020 in Windows Update?
Turns out, because of overloaded Microsoft servers, the installation files downloaded on your computer were either incomplete or corrupt.But the final outcome can be the slowdown or crashing of computer or even data loss if it is not fixed.This article gives step-by-step guides to solve this frequently happened error in Windows Update and Windows Defender.The following subtitles are quick links to detailed content.Windows Update (WU) is a service provided by Microsoft and its task is offering updates for operating system and Microsoft products such as Microsoft Office, Windows Live Essentials, etc.Step 4: Once done, follow the instructions here to install: How To Download And Install Windows 10 Free Upgrade [Tutorial].