To disable Autorun (AutoAction) of certain media or filetypes:
Method 1: Auto Action menu
Go to "Control Panel"
Open "AutoPlay"
Disable any/all actions from dropdown menus
Click "Save"
Method 2: Registry Editor
Run "regedit"
Navigate to the location:
IF disabling for all users: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
IF disabling for current user: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Create the DWORD (32-bit) string; and
Name the string as "NoDriveTypeAutoRun"
Modify the value of the string, "Value data", to
"FF" to disable for all media drives, or
Sum of "media drive value" assigned by Microsoft to each media drive type that should be disabled
"1" for unknown drives
"4" for removable drives
"8" for fixed drives
"10" for network drives
"20" for Disc ROM drives
"40" for RAM disks
NOTE: using "FF" value prevented file upload/download popup window of a web-browser from accessing directory tree and thumbnails/file-icons properl