Slow open Word, Excel and PowerPoint

If the problem is ONLY when you double-click on a file to open it. the
problem is likely due to DDE. It can be fixed by reinstalling, OR this
workaround.

Go to Control Panel, Folder Options, File Types, scroll down to and
select (DOC for Word files) or XLS (for Excel files), click Advanced,
select Open entry, click the edit Button.
Now uncheck "Use DDE" and then put your cursor in the Application box,
arrow all the way to the right and put in "%1" (include the quote
marks), IF there is /dde remove it. Then OK you way out. Things should
work quickly again.