It is always recommended to keep your imaging software updated in order to ensure compatibility with the latest operating systems and security patches. As Macrium Reflect Free will no longer be updated after 1-1-2024, it may be wise to consider switching to a different imaging software.
Windows Backup is a suitable replacement for Macrium Reflect Free, but it has limited features and may not provide all of the functionality you are used to. Additionally, it is important to note that Microsoft has announced that it will be removing the Windows Backup feature in a future update.
There are several free imaging software options available, including AOMEI Backupper Standard, EaseUS Todo Backup Free, and Paragon Backup & Recovery Free. Each software has its own strengths and weaknesses, so it is important to research each option to determine which one best fits your needs.
Ultimately, the decision of which imaging software to use will depend on your specific requirements and preferences. It is recommended to download and test out different options before making a final decision.