According to foreign media reports, Microsoft has already implemented a mandatory upgrade to Windows 10. Check if your system is in it.
The report mentioned that starting from December 2020, if the user's device is not manually upgraded, then Microsoft will begin to force some users to upgrade to Windows 10 Version 1909 or Version 2004.
The above measures are further actions taken after Microsoft announced that it will stop supporting Windows 10 Version 1903 (including Home Edition and Professional Edition).
If you are using Windows 10 Version 1903, you will be forced to upgrade to Version 1909 later this month. If you are currently using Windows 10 Version 1909, it will be forced to Windows 10 Version 2004 next spring.
The above upgrades are mandatory, unless the Windows registry or group policy is modified.