Navicat连接SqlServer数据库失败？

原来安装过SqlServer，后来不用卸载了，然后一直连接远程数据库的SqlServer使用（Navicat连接）。

昨天在本地安装之后，通过SqlServer management studio可以连接，但是Navicat连接报错，求助是什么问题？

[通过SqlServer studio连接正常]

[通过Navicat连接SqlServer报错]
[连接MySQL正常]

  [08001] [Microsoft][SQL Server Native Client 11.0]Registry information is corrupt or missing. Make sure the provider is installed andregistered correctly. (27)

  [08001] [Microsoft][SQL Server Native Client 11.0]Client unable to establish connection (27)

  [08001] [Microsoft][SQL Server Native Client 11.0]A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured toallow remote connections. For more information see SQL Server Books Online. (0)