Online since 1998

ntdll.dll free download



File specifications-

File description

NT Layer DLL

  • Version: 6.1.7601.18247 32bit
  • Filesize: 0.57 Mb
  • File language: English - United States
Rating: 3.94 1460 votes

Alternative versions (13)=

File versionFile languageFilesize 
6.3.9600.17031 32bit English - United States 0.65 Mb
5.1.2600.2180 32bit Swedish 0.32 Mb
6.2.9200.16578 32bit English - United States 0.67 Mb
6.1.7601.21861 64bit English - United States 0.73 Mb
6.0.6001.18538 32bit English - United States 0.48 Mb
5.1.2600.5512 32bit Swedish 0.32 Mb
5.1.2600.2180 32bit English - United States 0.32 Mb
5.1.2600.3520 32bit English - United States 0.32 Mb
6.0.6001.18538 64bit English - United States 0.65 Mb
6.1.7601.17725 64bit English - United States 0.73 Mb
6.1.7601.17514 32bit English - United States 0.56 Mb
6.1.7601.18247 32bit English - United States 0.57 Mb
6.1.7601.17725 32bit English - United States 0.56 Mb

How to install ntdll.dll=

Using the ntdll.dll Fixer

  1. Download the ntdll.dll Fixer
  2. Run the dff_fpo-ntdll.exe file that was downloaded.
  3. Wait for the installation to finish.
  4. After the installation has finished the Fixer will automatically launch (this may take a few minutes if you have an older computer). If you have any security software running on your computer (Comodo, ESET, Norton etc.), you may get warnings saying that DLL-files Fixer is trying to connect to internet and/or make changes to your computer. This is because the Fixer needs to contact our server to download the correct ntdll.dll file, install it in the Windows system folder and then make changes to the Windows Registry. You should allow the Fixer to make these changes, otherwise your problem may not be solved.
  5. When the Fixer has installed ntdll.dll on your computer, hopefully, your errors relating to ntdll.dll will be gone! You will be given the option to scan your computer for more errros. We encourage you to do so. The trial version of the Fixer will fix up to 15 additional errors it encounters. You can later upgrade to the full version for only $29.95 to get unlimited error fixing and DLL-file downloads.

Using the zip file (for advanced users)


Extract ntdll.dll from We recommend that you extract ntdll.dll to the installation directory of the program that is requesting ntdll.dll.

If that doesn't work, you will have to extract ntdll.dll to your system directory. By default, this is:

  • C:\Windows\System (Windows 95/98/Me)
  • C:\WINNT\System32 (Windows NT/2000)
  • C:\Windows\System32 (Windows XP, Vista, 7)

If you use a 64-bit version of Windows, you should also place ntdll.dll in C:\Windows\SysWOW64\

Make sure overwrite any existing files (but make a backup copy of the original file).

Reboot your computer.

If the problem still occurs, try the following:

  1. Open Windows Start menu and select "Run...".
  2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
  3. Type regsvr32 ntdll.dll and press Enter. Wiki content=

Edit this wiki page

The ntdll.dll file is one of the two most important file in the "Microsoft Windows NT" operating system, the other file is win32k.sys. Ntdll.dll is mostly concerned with system tasks and it includes a number of kernel-mode functions which enables the "Windows Application Programming Interface (API)". The ntdll.dll is also responsible for messages, timing, threading and synchronization in the operating system.

The most common occurring error messages caused by problems with ntdll.dll:

• "STOP: 0xC0000221 unknown hard error C:\Winnt\System32\Ntdll.dll"

• "STOP: C0000221 unknown hard error \SystemRoot\System32\ntdll.dll"

• "AppName: [PROGRAM NAME] ModName: ntdll.dll"

• "[PROGRAM NAME] caused a fault in module NTDLL.DLL at [ANY ADDRESS]"

• "Crash caused in ntdll.dll!"

• "NTDLL.DLL Error!"

• "Unhandled exception at [ANY ADDRESS] (NTDLL.DLL)"

Errors related to the ntdll.dll file are commonly occurring when a program is running, starting-up or even when "Microsoft Windows" is starting-up or shutting-down. If you are having trouble with ntdll.dll your pc will become slower, and unreliable. Programs may shut-down unexpected and cause data-loss.

Errors caused by problems with ntdll.dll are commonly occurring in all of the "Microsoft Windows" operating systems. The universal solution to your problems is to download and re-install a new copy of the ntdll.dll file. Another more time consuming solution is to re-install your OS (Operating system) entirely.

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