Repairing the Ntdll.dll Error
The ntdll.dll file is an integral component of your operating system; it’s described as being an NT Layer DLL, which means it has NT kernel functions, functions which are required for optimal system performance. This file can typically be found in your System32 folder and also in the i386 folder of your Windows Installation CD. The primary reason why you would receive an ntdll.dll error is because of file damage and/or corruption within your operating system.