This error is occurring on the Summary tab for the SQL and/or Exchange agent on the Appassure Core console.
Error
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
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Exception chain:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
The specified metadata credentials are invalid. The following errors occurred during the credentials validation: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.
Call to service method managementservice:Replay.Core.Contracts.Agents.IAgentsManagement SetAgentMetadataCredentials failed: The specified metadata credentials are invalid. The following errors occurred during the credentials validation: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections.