The TWCU.EXE or TP-LINK Wireless Client Utility is a configuration application required to run wireless adapters successfully. The TP-LINK Wireless Client Utility application only exists on computers that are using the TP-LINK adapters. Upon the installation of this application, the service will be automatically added to the Windows service list that will continuously run in the background.
The Twcu.exe is placed at the C:\Program Files\TP-LINKTP-LINK\Wireless Utility folder and is used by TP-LINK to connect to the internet. The name of the main executable file is twcu.exe and can be viewed in the Services tab of the Task Manager. If you are one of the users who just upgraded to Windows 10 from the previous Windows versions, then you’ll most likely see an error saying, “Failed to load the library file!” that has something to do with twcu.exe or TWCU. This error pops up when you go to your desktop and every time you log into your Windows 10 PC.
Like pointed out, this error is related to the TP-LINK Wireless Client Utility and every user who is using the TP-LINK Wireless Client Utility is experiencing this problem which may be due to some compatibility issues especially when you start getting this error right after you upgraded to Windows 10. To fix this problem, follow each one of the options given below.
The best thing you can do is to run the TP-LINK Wireless Client Utility in the compatibility mode since the problem is due to some compatibility issue. To run this utility in the compatibility mode, here’s what you have to do:
This option is almost the same as the first one except it is an alternative way of fixing the TP-LINK Wireless Client Utility in case the first one didn’t work. In this option, you will troubleshoot the compatibility issue of the TP-LINK Wireless Client Utility.

Error Causes
Since this requires registry tweak, please follow given solution step by step
"Error Code 0x80070057: The parameter is wrong"When this problem happens, you will end up struggling to move private documents from one person to another.
Error Causes"An Internal Error has occurred. Incorrect parameters".If this happens to you, realize that you are dealing with malfunction code 0x80070057. This error occurs mostly when you are trying to build a full backup of your Windows 7 OS.
Administrators can download updates from the Microsoft Download Center or the Windows Update Catalog to deploy to multiple computers If you are running Windows Server Update Services (WSUS) 3.0, System Center Essentials (SCE), or System Center Configuration Manager (SCCM) you can import updates directly into these applications. Security updates, critical updates, service packs, update rollups, definition updates, and critical drivers can be configured to synchronize with your server automatically. You can still import these updates into your application by using Microsoft Update Catalog; however, depending on how you configure WSUS, SCE, and SCCM, you may not need to import the updates.