Getting into QuickBooks error code C=387 suddenly when working on QuickBooks is pretty common. And what’s important here is to address this error immediately to avoid any further nuisance. The QuickBooks error code C=387 can be experienced with a warning message, when the company file has some issue and interrupts the process. This error can be addressed using some quick steps and solutions that we will be sharing in this piece of writing. To understand the QuickBooks error C=387 better, stick around.