Implicit conversion of varchar value to varchar cannot be performed because the collation of the value is unresolved due to a collation conflict between "<instance_collation>" and "<database_collation>" in add operator.
It is not possible to safely perform collation conversion of the VSPC database.
A new SQL Instance must be created with a collation that matches the VSPC database. After that SQL Instance is created, the VSPC database you were attempting to connect to must be moved/restored to that new collation-matching instance. When the database and instance collation match, you may connect Veeam Service Provider Console to the database.
For more information see View Collation Information in the SQL Documentation.
Information about the database and instance collation can be found within their properties. Within SQL Server Management Studio right-click on either the instance or database and select Properties. Database collation information is listed under the heading Maintenance, and instance collation is found in the row labeled Server Collation.
SELECT CONVERT (varchar(256), SERVERPROPERTY('collation'));
SELECT name, collation_name FROM sys.databases;
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