Struggling to fix QuickBooks error 1911 and want to learn ways to eliminate it? We can help you with that. The error shows up on the screen with a warning message: “We’re Sorry! Something went wrong with your installation.” Or “QuickBooks Error 1911”. Could not register type library for file C:program files(x86)Common FileintuitQBPOSSDKRuntimeQBPOSXMLRPLib.dll. Contact your support personnel.” This error is usually experienced when you install or upgrade QuickBooks accounting software. It further indicates that the system might not be functioning properly. There are a few reasons why such an error can be seen. To learn the causes and fixes to this error, make sure to read this blog carefully.