Very often it happens that the program is installed, everything went well, but when you double-click on the shortcut and wait for the start of work, an error message appears that notifies that the necessary file (file_name.dll) was not found, so the application cannot start up. It also says about reinstalling the application, which may fix the existing problem. Although this action does not always lead to the desired result, and dll registration is still necessary.
Why are libraries needed and what role do they play?
First you need to understand what this file is and what it is for. In fact, dll is a dynamically connected library, this is how this English abbreviation is translated. That is, with the help of such a tool, the operating system provides the ability to run and use various applications many times.

This library includes the ActiveX system and various drivers. It is worth noting that as new OSs appeared, dll also changed, although registering a dll in windows 7 is not much different from a similar process in windows xp. Initially, such libraries were used to save the occupied size on the hard disk, since in the years of the initial development of computers the volume of their disk space did not differ in capacity. The "* .dll" file included a component, which was a special library module for various applications running in the OS. Thus, several programs could use the same file for their work. That is why registering dll libraries is so important for the overall operation of the entire computer. Later, Microsoft developed a kind of modular application system, the meaning of which was that the modules are interchangeable, and there is an opportunity to organize the work of completely different applications.
Bug fix
Only after a notification of a problem has appeared, dll registration is necessary so that applications can function normally, and a similar error no longer appears. Registration must be correct and, most importantly, safe for the system.
There are several ways to do it:
- Try reinstalling the application.
- In the case where the previous action did not help, you need to check the dll libraries themselves directly. Information about this is located in the system32 folder, which can be accessed from the Windows directory of drive C. If the necessary file is not found, you will need to first download it, and then move it here.
After the desired library was on the computer, you need to copy it to system32, and then dll registration is required.
There are several methods:
- Go to the start menu and select the option "Find files and folders ...", then enter the inscription "regsvr32.exe", after it the file name and press "Enter".
- Use the cmd command, go to the command line as administrator and enter "regsvr32.exe" with the file name separated by a space. Further, the OS will do everything on its own, and if the dll registration is successful, the system will display a pop-up window with information about this.