Your TRE workspace may use a Linux or Windows Operating System. However, due to licensing restrictions Microsoft Office is not available in the TRE.
Equivalent functionality is provided through the open-source LibreOffice suite which is installed in all TRE workspaces.
Use LibreOffice Writer to edit Word documents ✍️
For full compabitility with Word save your files as .docx
Use LibreOffice Calc to edit Excel documents 🧮
For full compatibility with Excel save your files as .xlsx