Exchange 2010 SP3 Management Tools on Windows 8 X64 is allowed. Microsoft is working on to update supportability matrix.
The Next Question comes about prerequisite to install admin tool. Yes, I Just moved without it and got below screen
Need to install IIS component below
- IIS 6 Managment Compatibility
- IIS Metabase and IIS 6 Configuration Compatibility
Just start setup from elevated mode and hit install.
You are done now !!