Why can't I edit a file?

Examples that prevent file editing

Cause	What to do
You have Read-Only access	Read-Only permission does not allow editing. Only the sender can change your permission to Editor.
You have the Reader role	The Reader role is view-only. You cannot edit files under any circumstances.
The file format doesn't support online editing	Online editing is available for DOCX, XLSX, PPTX, TXT, CSV and CS files. Other formats such as PDFs, images, and similar files cannot be edited online.
A tag is blocking editing	In some cases tags can restrict editing too. Check with your administrator.

💡 Tip: If you need to edit a PDF, ask the sender to share the original editable version (e.g., a DOCX) instead.

Online editing via Office 365 requires specific conditions — here's a checklist of common reasons editing might be blocked.