How to fix Error 2716 on Windows Server 2025 / Windows 11

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Why This Error Happens

Error 2716 in SQL Server typically occurs when a query or stored procedure references a data type (often a user-defined type or alias type) that cannot be located in the current database context. This commonly happens after a database restore/migration where user-defined types were not recreated, or when a schema-qualified type reference is missing (e.g., using dbo.MyType instead of just MyType). It can also surface in Windows Server 2025 environments when SQL Server 2025’s stricter type-resolution engine fails to find type definitions due to case-sensitivity mismatches in collation settings.

Step-by-Step Resolution Guide

Step 1: Identify the Missing Data Type

  • Run SELECT * FROM sys.types WHERE name = 'YourTypeName'; to confirm if the type exists in the target database.
  • Check the exact error message for the parameter or column name and associated type reference.
  • Cross-reference with sys.table_types if the issue involves table-valued parameters.

Step 2: Recreate or Re-map the Missing User-Defined Type

  • If migrating from another server, export the type definition using SSMS: right-click the source database → Tasks → Generate Scripts → select User-defined Data Types.
  • Execute the script against the target database:
  CREATE TYPE dbo.YourTypeName FROM varchar(50) NOT NULL;
  • Ensure the schema prefix (dbo.) matches what the original object expects.

Step 3: Verify Schema and Collation Alignment

  • Confirm the database collation matches the source environment:
  SELECT DATABASEPROPERTYEX('YourDB', 'Collation');
  • If mismatched, rebuild the type under the correct schema or adjust object scripts to use dbo explicitly instead of relying on default schema resolution.

Step 4: Recompile Affected Objects

  • Force SQL Server to refresh its cached execution plans:
  EXEC sp_recompile 'YourProcedureName';
  • This ensures the corrected type mapping is picked up immediately rather than waiting for natural cache eviction.

Alternative or Verification Steps

  • Re-run the original query or stored procedure that triggered Error 2716 — it should now execute without type resolution failures.
  • If the error persists, drop and recreate the entire object (procedure/function) rather than just recompiling, as corrupted metadata in sys.sql_modules on SQL Server 2025 can sometimes require a full object rebuild to clear cached type bindings.