Sometimes one of these works when you're having trouble with double clicking on
the file in windows explorer:

Tools|Options|General|Ignore other applications (uncheck it)

--- or ---

Close Excel and
Windows Start Button|Run
excel /unregserver
then
Windows Start Button|Run
excel /regserver

The /unregserver & /regserver stuff resets the windows registry to excel's
factory defaults.

Maybe one of these will work for you.

Vasil Ivanov wrote:

When I double click an excel file, the Excel application starts but without
loading the workbook I double clicked. Then I can open my file from the menu
or with drag'n'drop. Can somebody tell me what kind of weird option have I
checked?
I guess I has to do something with Excel settings, but I couldn't figure it
out.

--

Dave Peterson