HKEY_CLASSES_ROOT exefile shell open command
* Double-click the (Default) value in the right pane
* Delete the current value data, and then type:
“%1” %*
(ie., quote-percent-one-quote-space-percent-asterisk.)
* Navigate to:
HKEY_CLASSES_ROOT.exe
* In the right-pane, set (default) to exefile
* Exit the Registry Editor.
If you’re unable to launch Regedit.exe even from Command Prompt, try this:
copy regedit.exe regedit.com
regedit.com