Andrew Peterson troubleshoots an error after installing SSMS vNext:
After installing SQL Server Management Studio for vNext, the Configuration Manager no longer opens, with a message similar to the following:
Cannot connect to WMI provider. You do not have permission or the server is unreachable. Note that you can only manage SQL Server 2005 and later servers with SQL Server Configuration Manager.
Invalid namespace [0x8004100e]
Read on for the solution.