http://errorcustomersupportphonenumber.com/quickbooks-error-15101/
Solution 1: Close not responding QBConnector.exe file
Open Task Manager by pressing CTRL+ALT+DEL at the same time
Now go to the processes tab and search and find QBconnector.exe
Now right-click on the same and then select End Process.
call us on Quickbooks Phone Number 1-855-729-7482 and get quick ways to troubleshoot QuickBooks Error 15101.