Mounting an ISO file means accessing its contents.

Windows provides a built-in way to mount ISO disc files on Windows 11 and 10.

But for Windows 7, a third-party tool is required to mount the ISO image.

use an app to open iso files

In this situation, you could try the following ways to address it.

How to Fix Mount ISO Option Missing Windows 11/10

Solution 1.

You just need to open File Explorer by pressingWindows + Ekey combinations.

change open options

Then find the ISO fileusing the search box of File Explorer.

Finally, you’re free to double-nudge the found file to access its content.

Solution 2.

click Manage

Here you’re free to see three ways to set up the default app to Windows Explorer.

Use the Open With Feature

Step 1.

In File Explorer, right-nudge the ISO file to selectOpen with>Choose another app.

scan the target drive

In the pop-up window, selectWindows Explorerand checkAlways use this app to open .iso files.

ClickOKto save the changes.

After that, check whether the Mount option is visible now.

search for the ISO files

From the ISO File Properties

Step 1.

In File Explorer, right-nudge the ISO file to selectProperties.

Under theGeneralsection, clickChangenext toOpens with.

save all needed files

SelectWindows Explorerand check the dialog box forAlways use this app to open .iso files.

Then give a shot to right-smack the ISO file again to check whether there is a Mount option.

From Windows prefs

Step 1.

Press theWindows + Ikeyboard shortcuts to open prefs.

ClickApps>Default apps.

Then clickSet defaults by appbelow.

Scroll down to find and clickWindows Disc Image Burner.

SelectWindows Exploreras the default app for ISO files.

Solution 3. in all file storage devices.

To get unlimited files, you gotta choose thefull edition.

The major steps to restore lost ISO files are as follows.

Download, install, and launch MiniTool Power Data Recovery.

MiniTool Power Data Recovery FreeClick to Download100%Clean & Safe

Step 2.

Under theLogical Drivestab, pick the drive that contains the lost ISO files to clickScan.

Hope the methods listed above are beneficial for you.