

If Media Creation Tool doesn’t work and is continuously showing 0x8007043C-0x90018 error, you should check if the Windows update services are turned on or not.

Way-2: Turn on the Services related to Windows update To open the newly generated value, double-click it.Rename the newly created value to AllowOSUpgrade.

Now, go to the right pane and right click on an empty space.You may copy and paste this path straight into the address bar, then press Enter to open it.Ĭomputer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\OSUpgrade If the User Account Control interface appears, click the Yes option to continue.

For Media Creation Tool OR MCT to function and perform the necessary upgrades, you must first set up an “AllowOSUpgrade” entry. The registry database can be crucial in resolving the error code 0x8007043C-0x90018 as you’ll see an OSUpgrade key associated with the latest Windows update there. Here is how to fix Media Creation Tool Error code 0x8007043C-0x90018 in Windows 11 or 10 – Way-1: Create AllowOSUpgrade Registry key Media Creation Tool Error code 0x8007043C-0x90018 in Windows 11 or 10 See – Fix: Error 0xa0000400 Media Creation Tool or Update Assistant Windows 10. For a user, it may become irritating to witness such an error code, so we have found some ways to resolve this issue which this post will deal with. However, despite how beneficial this tool may sound it’s prone to errors like the recent ones with the code 0x8007043C-0x90018. Furthermore, having a physical copy of the operating system is advantageous. This backup option is critical if something goes wrong with your computer and can throw an error 0x8007043C-0x90018. The media creation tool serves a prominent function as it lets you download a Windows 11 or 10 installation file to a flash drive (or DVD) which can be used later in reinstalling the same.
