Solution for slow opening of Excel and Word files

- Open My Computer.
- Go to Tools -> Folder Options, and click on File Types.
- Find the extension of the file in question (XLS, DOC, etc.)
- Highlight the extension, and click on the "Advanced" tab
- Select Open in the list and click button "Edit"
- Click into the "Application used..." field, and scroll to the end of the command.
- Put a space at the end, and type in "%1\" (With the quotes)
- Uncheck "Use DDE" if it is present
- Click on "OK"