QuickBooks Error Code 15106 is deeply associated with QuickBooks update issues. When your QuickBooks does not get updated as per the requirements, then you will start getting this error. The message showed by QuickBooks Error Code 15106 is that there is hampering to the update program. If you dig deep into this error, then the final reason would be you are unable to launch the program.
Basically, the presence of Webroot antivirus is one of the reasons for it. These programs stop the operations of QuickBooks.Another reason which holds for this error is that you have not gained access to the USER ID which is unable to fetch Administrator rights.
Call our QuickBooks Support to Fix QuickBooks Error 15106.