How to Find the Windows 10 Version Number Using the ISO File

Follow the steps outlined in this article to find the specific version of Windows 10 installed using the ISO (.iso) file.

Affected Operating Systems:

• Windows 10

Windows 10 version using ISO file

Follow the steps below to determine the specific version of Windows 10 installed using an ISO (.iso) file:

1. Once you have downloaded the Windows 10 .iso, double-click on the location of the file to mount it to the drive
2. Browse to the location of the iso file and open the Sources folder, then sort the files in the folder by size (largest on top)
3. Find the Install.*** file, and take note if the file name is either an install.wim, install.swm, or install.esd (Figure 1).

Figure 1: Looking for install.*** file in Sources folder of Windows 10 ISO

4. Take note of the Drive Letter assigned to the ISO file (for example, the drive letter F: as shown in Figure 1)
5. Launch an Admin Command Prompt, type the following command which corresponds to the install file type. Replace x with the appropriate drive letter where the ISO file is mounted, then press Enter
   • If install.wim, then type dism /Get-WimInfo /WimFile:x:\sources\install.wim /index:1
   • If install.swm, then type dism /Get-WimInfo /WimFile:x:\sources\install.swm /index:1
   • If install.esd, then type dism /Get-WimInfo /WimFile:x:\sources\install.esd /index:1
6. The following output appears (Figure 2):

   
   Figure 2: Output from Get-WimInfo

7. You can then go to the following site Windows 10 version history and search for the version appearing in the Get-WimInfo output (for example, Version 10.0.16251 in the output above).