On January 14th, 2020 Microsoft ended support for Windows 7.
Paratext may still run on Windows 7, but it is no longer officially supported. Some people have had difficulty installing Paratext 9 on Windows 7, and it is likely that future versions of Paratext will not run on Windows 7. We no longer test our software on Windows 7, and if you need support, we may ask you to move to Windows 10.
Also, please be aware that you are more vulnerable to being hacked if you are using Windows 7 because it will not receive security updates when vulnerabilities are discovered. This is especially important if you work in a sensitive location. Microsoft discusses this in their end-of-support announcement:
After January 14, 2020, PCs running Windows 7 no longer receive security updates. Therefore, it’s important that you upgrade to a modern operating system such as Windows 10, which can provide the latest security updates to help keep you and your data safer. In addition, Microsoft customer service is no longer available to provide Windows 7 technical support. Related services for Windows 7 are also also being discontinued over time …
If you continue to use Windows 7 after support has ended, your PC will still work, but it will be more vulnerable to security risks and viruses. Your PC will continue to start and run, but will no longer receive software updates, including security updates, from Microsoft.