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#11
This problem shouldn't even exist in the first place. Nobody uses this computer except me and it has never had any viruses ever. Therefore if there's a software problem its Microsofts fault.
Not all the programs installed on someone's computer come from Microsoft.
I didn't see mentioned where the original .iso file that won't mount is stored, may be an issue in that Folder which gets worked around when the .iso file is copied/moved to a different Folder. I keep all my .iso files on a Data drive [D:] in a Folder named CD/DVD ISO.
Know you said you use Winrar, but 7-Zip also does everything Winrar does too, and maybe a few more features. Its also a free app, if you wanted to look at it...link below.
http://7-zip.org/download.html
Try this, just to see if it makes any difference.
Find an iso file. Check it's valid - open it in Winrar e.g.
Close winrar.
1. Right click the iso file.
2. Click Open With, and set Winrar as the default program to open the iso.
3. Now open the Control Panel, Default Programs, click Associate a File Type or Protocol.
4. Wait for the list to populate.
5. Rt click on .iso, and now set Explorer as the default
6. You should see that now there is no .iso in the list of file types.
7. Try mounting the iso by rt clicking on it.
If this doesn't work, try uninstalling any program that might mount an iso file.
The only reason I like to use Windows Explorer to mount the ISO is because I don't have to worry about temporary data. With winrar and 7zip, the programs have to extract the data and then copy it to its destination. I only have 30GB left on my SSD and that poses a big problem when working with large file sizes. Also having the ability to mount the ISO virtually is good for old games that require the CD to be inserted in the drive to play.
Ok, was just a thought , on another note, I am running the exact same version of Windows you are, 1607 Build 14393.1198 and mine has no problems mounting ANY ISO no matter where its located. Using Explorer. Or Winrar, or 7-zip, so having those last 2 programs does not interfere with Explorer being able to mount ISO's at all.
Don't sound like a Windows 10 issue to me......sounds like something is messed up on your system. Maybe try doing a repair install, or Run Dism to check for errors, SFC .......unless you have already tried.