Microsoft lets you download Windows 10 installation media from this website.
You can create installation media (USB flash drive or DVD) which you can then use to install a new copy of Windows 10, perform a clean installation, or reinstall Windows 10.
However, in its default configuration you will get the following error message when using the tool in conjunction with Avira Antivirus.
This error occurs because Avira Antivirus blocks autorun.inf which the tool uses to write to the USB drive or CD.
Disable the autorun function
- Click the Avira icon in your system tray.
Search for your Antivirus and click Open.
- Click the Settings icon in the lower left-hand corner of your Antivirus window.
- Select General → Security.
Disable the option "Block autorun function".
- Click Apply and OK.