Previous posts have suggested its an update for OL 2003 that's incompatible
with OL 2007
You can certainly modify your update settings to ignore an OL 2003 update

"suthernaccents" wrote in message
...
I am running Win7, Outlook 2007 and Office 2003 (word/excel/ppoint). All
is
good until I get a "windows update", then Outlook ceases. First it tells
me
to make Outlook my primary mail client (which it is), then it provides an
error message regarding ExSec32.dll and says to reload Outlook. This is
getting a little ridiculous given ALL of these are Microsoft products. Do
I
just turn off the updates? Is there a way to turn off the Office 2003 vs
Win7
updates if this is the issue. Thank you