1. Check the file association settings: Make sure that the default openers for files are set correctly. Right-click the file, select Properties, find the opening method in the General tab, and select the correct program.
2. Reinstall related software: If the problem only appears in a specific software, you can try to reinstall the software. Make sure to use the latest version and install according to the instructions of the software provider.
3. Modify system settings: Sometimes, system settings may prevent double-clicking to open files. You can check the settings in Folder Options in Control Panel and make sure that the Click to Open Project option is selected.
4. Check for viruses or malware: Some viruses or malware may also make it impossible to double-click to open the file. You can run security software to scan and clean your computer.
If none of the above methods can solve the problem, you may need to further check your system and software configuration. It is recommended that you contact relevant technical support or consult professionals for more accurate help.