If you don’t have enabled the mounting option in your system, you can follow below easy steps to make it enable in your system and enjoy this option. In this article, we’ll see how to fix mount option missing in Windows 10 which had been messed up by a third party app. Sometimes, a third party application will mess up the default options and mount option will seem like missing in Windows 10 or Windows 8.1. But now Windows Explorer has the capability of creating a virtual DVD ROM and automatically insert the ISO file. Previously it was done using third party software which would create additional virtual CD/DVD ROM drives in which the ISO files were inserted virtually. You can just right click any ISO file and select Mount. Windows 8.1 and Windows 10 can have the mount option of ISO files by default.