All was working fine last night. 
I tell you more, got one user in AR module and when we link to the other GL-AR- AP - Inventory- Invoice- Bank Rec- PO while in this module we are getting sign on error. 
Will check what you said, but this config has been working for the last 2 years no problem. 
Please give me tech tip on sign on and networking files used and path so I can trouble shoot. 
I am thinking that the IT guy who manages the server did something last night which I need to undo fast, but I do not want to go probing and create a problem where none existed. 
Thanks for quick response...
_________________________
Edward C Chin-Mook 
10 Waterloo Ave, Kingston 10, Jamaica
876-754-7444
876-754-5513