Thank you for your answers. The solution was provided to me by the education support:
Unfortunately related to a Windows update, there could be a problem starting SOLIDWORKS. In this case, SOLIDWORS is suspended from the splash screen or closes automatically.
This behavior can occur when the "Beta: Use Unicode UTF-8 for global language support" version is active in the Windows 10 operating system. This setting also affects Microsoft Excel and other programs that use VBA\VBE.
To determine if this affects SOLIDWORKS® performance, follow these steps:
1. 1. Open the Windows Control Panel > "Region".
2. 2. Click on the "Administration" tab.
3. In the "Language for Non-Unicode Programs" group, click "Change System Language".
4. In the "Locale" dialog box, make sure that the "Beta: Use Unicode UTF-8 for global language support" file is not active. If it is, uncheck the box > click "OK".
5. 5. In the "Locale" dialog box, click "Apply" > "OK".
6. Exit the control panel.
7. Restart Windows. This step may not be necessary, but restarting Windows helps ensure that the system retains the previous setting.
In addition, recent tests have indicated that upgrading to Windows 10 1909 has resolved this issue for most users.
You can also :
Go to the c:\programdata\rename the Flexnet folder to Flexnet-1
In the registers
Launch Start, then in the search box, type
REGEDIT
and validate and launch the application
Go to the folder
Hkey_current_user/software/
Select the "SolidWorks" folder
Right-click and then rename the folder to " SolidWorks-1 "
Close the registry window
and then restart SolidWorks.