ESD ToolKit allows you to convert Microsoft's ESD (Electronic Software Download) format to ISO so you can burn to your favorite medium.Eventually most CDDVDBlu-Ray tools will allow for burning ESD directly to ISO for now a utility like this is needed to install Windows 10 and other Microsoft products and updates.How to use ESD ToolKit: Extract all the files and run "RenameISOs". A command prompt will start and open the ESD Toolkit GUI giving you the option of decrypting a file you already have or downloading and decrypting an ESD file. It is easier to have the file you want already downloaded. Follow the prompts to load and decrypt the file you need.