Bulk print PDFs for browser-based RDP
Users in browser-based RDP sessions can now print multiple PDF files as a single print job. Copy the files to your clipboard on the remote machine, then select Print all PDFs in the clipboard panel. The files are combined into one PDF and sent to your local printer.

Bulk print is available in Chromium-based browsers and Firefox. For more information, refer to Print PDFs for browser-based RDP.