According to the Printing Reports
help article, Adobe Reader
browser plug-in or Chrome PDF plug-in (for Chrome) should be installed and enabled. If Adobe Reader or Chrome PDF plug-in is not detected, clicking the print button would export the report to PDF, which when opened will display a print dialog.
Also, note that there is a behavior of Edge which prevents the browser from opening PDF files for preview: Viewing PDF files in Edge
Having the plug-in is required for the viewer's printing functionality. Unfortunately, Edge does not support the Adobe/Reader plug-in. Here is the official statement of Adobe:
Microsoft Windows 10 will ship with two browsers - Internet Explorer 11 and the new Edge browser.
The Edge browser will be the default browser and Internet Explorer 11 will be available to support legacy workflows. The new Edge browser will not have any support for ActiveX plug-ins. Therefore, Acrobat/Reader plug-in won't work with Edge. For more information, see Change in support for Acrobat and Reader plug-ins in modern web browsers.
Use Internet Explorer 11 to open PDFs. To enable the Acrobat/Reader plug-in in Internet Explorer, see the steps in the previous section.
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