Runtime error 440:-
Runtime error 440 is a common error of Visual Basic which is the part of the Microsoft .NET. If you are running the Visual Basic program and loading the COM (Component Object Model) object and it failed to load then you will get the runtime error 440 with some message that 440 Automation error. COM is used to perform intercommunication process and dynamic object creation in large range of programming languages. Such as OLE Automation, COM+, Activex etc. If you have included external libraries in your program which are external then make sure that it is registered correctly otherwise it may be occurs this problem.
Cause of runtime error 440:-
If you are running the visual basic program and using external libraries and loading COM object but it fails to load then it will cause runtime error 440. COM provides more features in the Visual Basic programs but if the files such as Activex.exe, dll files are not registered then it may be the reason of this problem. When this issue occurs in the system then the program or application terminates and also became problematic because it may damage windows and programs may be deleted. Sometime virus injection is the reason of this trouble because if virus injects in the system it damage the component of COM, system files and the files of the .NET which are required to run the program. A part from these issues there are also some other issue such as missing dll file, outdated COM file, missing system registry file. If you are running the program in general login I mean not in Administrator then it may be problematic.
Solution of this problem:-
If you are getting the runtime error 440 (Automation error) in Visual Basic then it is sure that something missing of COM file or dll file. So it is compulsory to check that the external libraries which are used in the program are registered manually or not if they not registered then register them and also repair windows because if the windows file is missing then it will be solved. Be sure that the activex.exe, dll files and other file of the COM and Visual Basic are damaged or not if they damaged then repair or replace them. Uninstall the software and reinstall. Scan the system to fix the issues automatically and protects the system from malicious programs. Give the full permission of Administrator. These are the manual solution of runtime error 440 but you can also fix it by using a windows repair tool. Install the tool and run. It will automatically fix the runtime error 440.