This one is really weird. I am setting up a new workstation (win XP Pro) and have just successfully mapped about 5 network drives to our file server (windows 2003 Std).
I just went to map to another folder on the server and when I click on the mapping it asks me to choose the program I want to open this file with. It's a mapped network drive so, I'm not sure why I'm getting this dialogue box.
I redid the mapping and the behavior continues... rebooted the workstation and behavior didn't change.
I replicated the problem on another station that didn't previously have this particular folder on the server mapped. On computers that have had the drive mapped all along, the behavior does not occur.
The other server folders I've mapped to the new workstation work as they should... double-click and you're in. No "choose the program you want to use to open this file".
If I right click on the mapped drive and choose "open" or "Explore"... works just fine. If I choose "explorer" as the program it also works fine...but the option to select "always use this program" is greyed-out.
It seems to be isolated to one folder on the file server, but the behavior only occurs on PCs that have never previously mapped to this folder.
Anyone have any ideas here? I've never seen a problem like this before.