I've been trying to install Qt free source in several ways, but none of them worked. The problem occurs during the last stage when I press the install button. It takes me to the installation page and then closes without displaying any error message on the screen.

I'm using Windows 11 64-bit and have tried changing the installation path, running it as an administrator, and disabling my antivirus, but nothing seems to work. I even tried installing an older version, but that didn't help either. I would appreciate any help with this.

Fortunately, I found a solution that doesn't require downloading the program from the website and installing it, which I couldn't get to work. Here's what I did:

First, I completely uninstalled Qt5 using "pip uninstall pyqt5". Then, I installed it again. After installation, the program showed me a path that looked like this: "Requirement already satisfied: PyQt5-Qt5>=5.15.2 in c:\users\user\appdata\local\packages\pythonsoftwarefoundation.python.3.11_qbz5n2kfra8p0\localcache\local-packages\python311\site-packages (from pyqt5) (5.15.2)
Installing collected packages: pyqt5".

To find the designer, you need to go to this path: "C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\qt5_applications\Qt\bin". There, you'll be able to find the designer.

Hope this helps!