SQL Server stops loading assembly

Question

We have developed an assembly for SQL Server 2008 R2.

The assembly has been working for a week. The managed stored proc inside the assembly was working fine for the

Answer 1

We saw this error when trying to update spatial columns on a new server which was running SQL Server 2017.

Credit to the head of IT at our client company who found out that:

Sql 2017 introduced new trust rules for CLR (SQL 2012 wasn't a problem)... Even 'safe' CLR has to have been signed (which this dll isn't) or you have to force the trust as below:

DECLARE @clrName nvarchar(4000) = 'sqlspatialtools, version=0.0.0.0, culture=neutral, publickeytoken=null, processorarchitecture=msil'

DECLARE @asmBin varbinary(max) = 'PUT THE BINARY STRING HERE (GET FROM SCRIPTING CREATE TO FOR THE EXISTING ASSEMBLY'

DECLARE @hash varbinary(64);

SELECT @hash = HASHBYTES('SHA2_512', @asmBin);

EXEC sys.sp_add_trusted_assembly @hash = @hash, @description = @clrName;

This fixed the issue for us.