Always ensure that ISO files are obtained from trusted, legitimate sources to avoid malicious software.

The file can be easily copied to USB drives or stored on network drives. Important Considerations

Navigate to the virtual drive in File Explorer and run the setup.exe or install.exe file.

Utilizing a pre-packaged ISO for proprietary software like Fritz 18 requires a valid license key, even if the installation files are freely obtained. If you can tell me: What is the size of the ISO file? Where did you get it ? Are you getting a specific error when trying to open it? I can give you more specific instructions on how to use it.