Crystal report viewer: Logon Failed

Dear all,

There is an error message "Logon Failed" on one of the user's pc while he was trying to preview for certain reports, he could view the rest of the reports without any error message prompted. Besides, there is no problem for developer's pc and other users pc to view the reports. The system is written by using VB 6.0 and intergrated with CR IX. I found no way to solve the problem, does anyone could help?? Thanks.

Searching is best way to slove your problem.

I've been searched around but still can't get the solution which similiar to my case. Does anyone faced this problem before.

Need help urgently. Thanks.