OpenAI can offer this compatibility because Microsoft’s file formats for Excel (.xlsx) and PowerPoint (.pptx) are open source, so OpenAI doesn't need any permission to build tools that use them.

If Task Scheduler is not opening an Excel file on your Windows PC, ensure the task is set to run only when user is logged on, or use these fixes.

Microsoft is stripping editing features from its 365 Copilot app on iOS, forcing users to rely on standalone Word, Excel, and ...