If you need to open a DMG file on your PC to access business-related files, such as documents or databases, you can do so using a PC software application called 7-Zip.

DMG Extractor and 7-Zip will allow you to open Mac's DMG file format on Windows 11/10 PC easily. Read reviews and download free.

If you have a Mac, the easiest method would be just to open the DMG file and create a Zip file (which Mac's support natively,) then open the Zip file on the PC.

If the DMG file is stored somewhere else, like on a USB hard drive, unplugging the drive without first unmounting the DMG file can corrupt the part of the file that tells your computer how to open it.