Error when creating a Reporting task: "Error 0x00006667: Cannot open dialog. Reason:0x80131509: Unable to connect to Report Server"
SOLUTION 1:
Use the IP address instead of the SQL Server Reporting Services (SSRS) server name when creating the reporting task
SOLUTION 2:
The error message may be caused by an out-of-disk space issue on the SQL Server, so check this as well, and if needed, after freeing up some space, restart the SQL Server or SQL Server services to see if this resolves the issue.