Using a Canon Imageclass MF632. The Word and Excel documents do not appear on the USB stick when it is inserted into the printer. Using Office 365 on my iPad and Office 365 and Windows 10 on my laptop to create the Word/Excel docs. PDF files do show/print from the same USB however.
While I am sure .PDF, .JPG and .TIFF file formats is supported, I'm not sure about .docx or .xlsx. I think John is correct.
Also note, only paths 5 or less deep are supported.
Bay Area - CA
~R5 C (22.214.171.124) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw ~Pixel 8 ~CarePaks Are Worth It
09/26/2023: New firmware updates are available.
08/18/2023: Canon EOS R5 C training series is released.
07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
03/30/2023: New firmware updates are available.