Try this for testing: * Go to <instance_name>/analytics * Navigate to the report, and click on “More” below report name. * Select “Permissions” from the drop-down menu. * On pop-up window, select + icon, search for desired user/role , and add it to Selected Member pane by clicking on >> button. * At the right-bottom side…

Please provide more details such as: * When the report was scheduled, what was the output mode (PDF, ETXT, CSV etc). * Is the report using Bursting? * Was the report completed successfully? 

Try this: * Go to <instance_url>/analytics * Click on Administration link in the top ribbon * Click on Manage Privileges * You will be presented with a big table. In the first column, look for "Catalog". For this record, In the second column look for "Archive Catalog". For this record, In the third column, click on any…

If it is a custom report, you can rename XML tags and make them smaller, that should help reducing the size of XML file. Also, Try to break down output into multiple smaller chunks for example, instead of running report for a whole year, run it for each period, or quarter instead at one time.