Microsoft System CLR Types for SQL Server 2014 provides components used by certain SQL Server features and applications to work with SQL Server-specific CLR types, including spatial and hierarchy-related data types. It may be required by applications or management components that depend on these libraries, but installing it alone will not repair a damaged MDF file.
If the actual problem is database corruption, an inaccessible MDF/NDF file, or a database that cannot be attached to SQL Server 2014, the issue should be handled at the database-file level.
For such a situation, SysTools SQL Recovery Tool can be considered as an alternative recovery approach. The software analyzes MDF/NDF database files without requiring the damaged database to be operational in SQL Server. It can recover database components such as tables, stored procedures, views, triggers, functions, and other objects, while allowing the recovered records to be previewed before export.
This distinction is important: Microsoft System CLR Types addresses SQL Server component dependencies, whereas a SQL recovery utility addresses corruption or accessibility problems within the database files themselves.
Therefore, first determine whether the error is caused by a missing CLR dependency or actual MDF/NDF corruption. If the database file itself is damaged and normal SQL Server attachment or restoration methods fail, a dedicated recovery may provide a more suitable recovery path.