Repair Ntdll.dll - Here's how

If Windows or a program reports problems with the ntdll.dll file, you must repair it. We'll show you how it's done.

Getting Started: Repair ntdll.dll

Internet Explorer: It is not uncommon for the problem to be related to Internet Explorer. Disable all add-ons in the browser and restart the computer. The problem may already be resolved. Instructions for deactivating the add-ons can be found in this practical tip.
Exchange file: Download a new ntdll.dll. You can find the file for example on this website from DLL-Files.com. Click the "Download ZIP-File" button below and copy the DLL file to the "C: / Windows / System32" folder. Copy the old ntdll.dll file to your desktop for security. Attention: First try the instructions in the next paragraph. This should only be your last solution as it is risky.

If the previous steps did not help, you still have the system repair by Windows. This checks your file system and renews it if necessary.

Windows 8: With the "Refresh" function, you can easily renew your Windows file system. No personal data is lost in the process. You can find instructions for refreshing in this practical tip.
Windows 7 and Vista: Simply follow these instructions for repair. In the third step, however, select "System repair".

If you have a faulty XINPUT1_3.dll file, we will help you in the next practical tip.