My first guess is that you have a helpful program/workbook/addin that's not too
helpful.

You can do some detective work to find out what it is.

Chip Pearson has some notes on how to diagnose startup errors:
http://www.cpearson.com/excel/StartupErrors.htm

And Jan Karel Pieterse has more notes:
http://www.jkp-ads.com/Articles/StartupProblems.asp

healthyfatboy wrote:

I just started a new job and the computer I'm using has the problem of
resizing my window to 800X600 whenever I open Excel and only Excel. Does
anyone know why this might be the case?

--

Dave Peterson