Is this all being tested on a single computer running WinServer 2003?
Or do users A and B log on to the server from a different computer?
If the latter, how are they finding and opening the file? (Open remote... I hope)
If the latter, are the two client machines part of the server's domain?
The first occurence was on a client computer (browser). But this effect appears even on the local machine! I stay local and change my local profile: only the creator has write access, another local profile has only read access.
Local write access on the operating system is double checked: all ok.
Is there a way to find the reason?