Server Version : Business and Key missing after Windows 10 update

The server version was working fine. The key is updated from browser from client PC in network.

The key is successful updated message is appeared.

Later the Windows 10 updated for long time about half an hour.

When Manager IO URL like IP_address:8080/login, then the screen which use to appear for first time appeared with administrator login.

My business are not listed.
The warning on top to enter the product key is also displayed.

Searched in whole system for *.manager file, only 000.00.manager is found.

Please help in retrieving my business files.

With regards