Need to find what is opening workbook ( IE or Excel )
 

I made a macro that seems to work great. Then one day I found when Internet
Explorer tried to open a workbook without a excel application being open I
got a fatal error.

Is there some code(s) to find out if internet explorer is trying to open a
wookbook?
And
Is there some code(s) to find out if Excel application is running?

Because when I have a excel application open Internet Explorer will open a
wookbook without any problems.

Thanks in advance