You can sort out QuickBooks Error 3371 Code 11118 by deleting the ecml file. To begin, hit Windows + R on your keyboard at the same time. Additionally, in the window, type in C:\ProgramData\intuit\Entitlement Client\v8. Further, the above-mentioned address will be displayed in Windows Explorer. Then, the ecml file must now be deleted. All that's left to do now is close the window. Finally, you have to restart QuickBooks and re-register the item.