Quite often, especially in Windows 7, it happens that some programs spontaneously shut down for no reason. The message issued by the system indicates the name of the failed module ntdll.dll. Few people know what it is, and what causes the appearance of such errors.
Causes of ntdll.dll library errors
An error associated with a malfunction of this library can occur in two ways. As a rule, more often than not, a message simply appears about the abnormal termination of an application (even the standard Windows Explorer).
If you click on the button “Show problem details”, the ntdll.dll file will be listed in the description.
In the second case, an error can occur in the form of a string on a blue screen, which is very scary for many users, because they think that this is the so-called "screen of death." This is not entirely true. However, now it does not matter.
The main reason for such failures is the installation of outdated software (most often games) that either modifies the ntdll.dll file or simply replaces it. What else can be done to fix the problem?
Error in ntdll.dll file: how to fix?
Among the main ways to correct such errors, there are several options. The most effective are restoring the system to its original state when the error did not appear, replacing the ntdll.dll library file and using the extended compatibility mode (this applies to Windows 7, 8 and 10 systems). Let's consider each of them.
System Restore
Access to the recovery options is done through the "Control Panel" using the "Backup and Restore" section.
Here you will need to display all the points, having previously remembered when this problem appeared. At the end of the process, the system will restore the file you are looking for, and also delete the program that affected its performance.
Download original file
However, there is a simpler option. So, for example, for each assembly of original Windows OS segdonya on the Internet, you can find many links to download the original ntdll.dll library, taken from a "clean" system immediately after installation.
Everything is simple here. First you need to download the file to your computer, and then integrate it into the system (System32 folder in the Windows root directory).
Using compatibility mode when starting programs
In some cases, the problem may appear on Windows 7, 8, and 10 systems when launching applications designed exclusively for Windows XP.
Here you need to use the compatibility settings when you run the executable file of the program (.exe), accessed through the menu of properties, called by right-clicking. It is enough to select the required version or assembly of the Windows OS in the mode field, even with the indication of the installed service packs, and also use the option to launch the program on behalf of the administrator.
Other methods
Sometimes, if the above methods do not help, you can try to disable the Application Compatibility Assistant service or the account control service . In most cases this is not required.
However, this problem can be observed on processors such as Intel Core i3-i5, and as many experts and users say, it’s not possible to correct the situation at all. Well, there's nothing to be done - you have to reinstall the entire system.
Of course, you can try to use a software product such as DLL Suite or DLL-Files Fixer, but the only thing that can be achieved is the usual loading of a dynamic library onto your computer (though right away with integration into the right place).
Finally, it remains to add that system recovery is, in the opinion of many, the most preferred method. If you need to use software for XP, it is better to turn on compatibility mode or just find a version designed to work in newer "OSes" (even if it is 32-bit for systems with 64-bit architecture).