Advanced Event Viewer Report Printing Off Page

The Grid Summary Report in Advanced Event Viewer (as with all Grid Summary Reports throughout the system) is printing exactly what you have displayed on the screen. There is no style defined, no word wrap, etc. - it is basically a screen print. You will either need to remove some of the columns from your Grid View (right click > Select Grid Fields > remove the fields) and/or change the orientation of the report from Portrait to Landscape. If all data still does not fit, you should choose Reports, Detail Report and choose a style listed under there (or you can create your own style).