SymptomsDedicated IP of Windows server in H-Sphere Control panel is marked as invalid.
ResolutionFirst of all please check this article.
If this is not the case, then most likely free dedicated IP address was added manually on the server.
To fix this problem please follow the instructions below:
1. Remove IP address from H-Sphere CP.
2. Check if IP is still present on Windows at Local Area Connection Properties > Internet Protocol (TCP/IP) Properties > Advanced > IP addresses.
3. Remove it if it is present.
4. Add free dedicated IP through H-Sphre CP.