Report Loading Error

I have developed a report and deployed it successfully. After I input all the parameters, the report cannot be displayed and shows the error as follows:

???? (rsProcessingAborted) ??
??? 'tempDB' ?? (rsErrorOpeningConnection) ??
Login failed for user 'username'. Reason: Not associated with a trusted SQL Server connection.

The report can be loaded a few times before and cannot be loaded now.

I have checked that the DB security setting of authentication is set to "SQL Server and Windows" already.

Any idea to solve this problem?

msfriend wrote:

I have developed a report and deployed it successfully. After I input all the parameters, the report cannot be displayed and shows the error as follows: ???? (rsProcessingAborted) ?? ??? 'tempDB' ?? (rsErrorOpeningConnection) ?? Login failed for user 'username'. Reason: Not associated with a trusted SQL Server connection. The report can be loaded a few times before and cannot be loaded now. I have checked that the DB security setting of authentication is set to "SQL Server and Windows" already. Any idea to solve this problem?

Should be authentication problem. Did you find any solution?