By purchasing a licensed copy of any product, the user receives the original code. Sometimes manufacturers attach a code sticker to the game box and the boxes are lost. There are several ways to solve this problem.
License key
Licensed products have their own unique code that must be entered into the appropriate field either before installing or before starting the game. It often happens that the license code is simply lost along with the box itself (since in most cases it is printed on the packaging), but the game remains. You can solve the problem.
Solution
First, you need to know exactly when the game requires you to enter a license code. For example, some games require a key just before installing, while others require a key before launching the game itself. Depending on this, you need to resort to different solutions.
If the game asks to enter a license code, but it is lost, then you can download the image of the game on the Internet or use special programs - key generators. The list of the database of one or another generator includes a certain number of keys that users of personal computers can use. In order to find a key generator that suits you, you must enter the name of the game in the search engine along with the keyword "key generator".
In addition, some users specifically create a database of keys for games that can be used (they can also be found on the Internet).
Key generators can work in a different way. For example, some of them extract passwords directly from the system registry (for the most part, this is how official password generators for Windows work).
If the game asks for a license code just before starting the game, then you can simply download NoDVD or NoCD. These are executable files that need to be replaced with the original ones. In order for everything to work well, you need to go to the root directory of the game and replace the original files with NoDVD. Immediately after that, you can start the game, and everything should work without a password. One significant nuance should be noted. Unfortunately, today, NoDVD is impossible to find for absolutely all games, but for the majority they are.
In the event of a similar problem, you can contact technical support directly (especially if a digital copy of the game was purchased). They can help with solving a similar problem, but for the most part they shift all the blame onto the shoulders of the user himself.