An error occurred when QuickBooks tried to access the company file

Hi everyone,
When I try to open QuickBooks files from my server I got error message. This is error that I am having first time and I don’t know what to do. How can this be fixed? OS Windows 7,
Thank you
Sean
Warning
An error occurred when Quickbooks tried to access the company file. Please try again. If the problem persists, contact Intuit Technical Support and provide them with the following error codes: (.6000,.80).
