Microsoft support said they know about the problem and are working to solve the error.
Users have noticed an error Microsoft Activation Servers.
On some computers with Windows 10 Pro, the operating system reported that the license for Windows 10 Pro is deactivated and asked users to install Windows 10 Home.
During the diagnosis, a license conflict was detected, since the installation of Windows 10 Pro is trying to work with a license for Windows 10 Home. In this case, the user must change the operating system to the Home version or buy a password for the Pro version. However, trying to buy a Windows 10 Pro key in the app store does not solve the problem.
Microsoft support said they are aware of the problem and are working to solve an error related to some type of failure on the activation server. The company acknowledged that some systems with Windows 10 Pro and Windows 10 Enterprise do not recognize the license previously activated.
This problem was faced by users in Russia, Japan, EE. U., Korea and other countries. Microsoft promised that the problem be solved within 24 hours and that computers with Windows 10 Pro will receive an automatic correction.
Remember that Microsoft revoked the latest Windows update after deleting user files.