QuickBooks Error Code 3008 happens when QuickBooks is unable to connect to the company file. This issue can arise as a result of a corrupted or destroyed business file, an erroneous folder path, or firewall or internet security settings that prevent QuickBooks from connecting to the company file. To resolve this problem, you must first identify the source of the error. Here are some tips from the blog to resolve QuickBooks Error 3008. For more information, call +1(855) 738-0359.