Cannot attach zip files to messages

[Andrew]

For some reason, when I open a message window in Outlook
2002, I cannot attach a zip file (or any attachment that
has a file extention that starts with the letter z). If
I rename the file extention, I can attach the file. I
can also send the same attachment if I right click on it
and create a new message by selecting the "send to"
option. Thoughts?

 

[Lanwench [MVP - Exchange]]

I can't think of anything in Outlook that would do this. Any error messages?

 

[Simon Kravis]

For some reason, when I open a message window in Outlook
2002, I cannot attach a zip file (or any attachment that
has a file extention that starts with the letter z). If
I rename the file extention, I can attach the file. I
can also send the same attachment if I right click on it
and create a new message by selecting the "send to"
option. Thoughts?

Found that this problem (on XP) was caused by the file extension .zip
not being registered - for some reason this makes Outlook think it's a
folder and ignore it.