In one or the other way you can say that QuickBooks are the store house where your mails and accounts are saved. It is most commonly used by the small scale or medium sized business. QuickBooks customer service is one way that will help you reach the help center easily if there is any problem in fixing the Error 3140. And here is how you can do it by yourself:

• The first thing that you will have to do is register the entries showing the Error 3140 and complete scanning your entire computer.
• Clean up your system, including all the cache files and other temporary files.

Visit here: QuickBooks tech support