1. Navigate to HKEY_CLASSES_ROOT/Excel.Sheet.12/shell/Open/command.
2. From the HKEY_CLASSES_ROOT/Excel.Sheet.12/shell/Open/command folder right-click on the (Default) registry entry and select Modify.
3. Add a “%1” to the end of the Value data textbox.
4. Now right-click the command registry entry (this is from the same HKEY_CLASSES_ROOT/Excel.Sheet.12/shell/Open/command folder), select Rename, and rename it to command2.
5. Next right-click the ddeexec folder (HKEY_CLASSES_ROOT/Excel.Sheet.12/shell/Open/ddeexec), select Rename, and rename it to ddeexec2.
6. Now go to the Excel.Sheet.8 folder (HKEY_CLASSES_ROOT/Excel.Sheet.8) and repeat the same steps as mentioned above. In other words, add a “%1” to the (Default) registry entry from HKEY_CLASSES_ROOT/Excel.Sheet.8/shell/Open/command, rename the command registry entry to command2 from HKEY_CLASSES_ROOT/Excel.Sheet.8/shell/Open/command, and rename the ddeexec folder (HKEY_CLASSES_ROOT/Excel.Sheet.8/shell/Open/ddeexec) to ddeexec2:
Close the registry editor