Copilot Studio: “Get file content using path” fails for table-heavy DOCX files

The test isolates the failure to text extraction after retrieval, not the path or authentication. The OneDrive action returns the file as binary content; Copilot performs the readable-text conversion afterward. Microsoft documents DOCX and file-size support, but publishes no table-count or complexity threshold. Make two copies of the working file and add one structural change at a time: merged cells, nested tables, text boxes, headers, and embedded objects. Word content in standard paragraphs and ordinary body tables is supported, while text in several other structures may be skipped. Simplify or flatten the first structure that reproduces the error, resave the document in desktop Word, and test again. For a reliable production workaround, pre-extract the content to plain text or HTML before passing it to the agent. If it still fails, submit both minimal files, timestamps, environment ID, and run IDs to Power Platform support.