Excel Formula Suggestions Not Working in Copilot: Fix

You open Excel, select a cell, and click the Copilot button expecting formula suggestions. Instead, Copilot shows an error message or remains inactive. This problem usually occurs because Copilot requires specific prerequisites: a compatible Microsoft 365 subscription, an active internet connection, and the correct workbook format. This article explains the exact reasons Copilot fails to … Read more

Excel Shows _xlfn Prefix After Microsoft 365 Update: Fix

After a Microsoft 365 update, you may open an Excel workbook and see formulas displaying a strange _xlfn. prefix, such as _xlfn.TEXTBEFORE or _xlfn.XLOOKUP. This happens because the workbook contains functions from a newer version of Excel that your current build does not yet support, or the file was saved in a format that strips … Read more

Excel Shared Workbook Opens Read Only for Some Users: Fix

When you share an Excel workbook with colleagues, some users may see the file open as read-only even though others can edit it normally. This problem usually happens because of file-locking conflicts, incorrect sharing settings, or user permission restrictions on the network or cloud location. In this article, you will learn the exact causes of … Read more

Excel Autosave Turns Off When File Has External Links: Fix

You open an Excel workbook that contains external links to other files, and you notice that the Autosave toggle in the title bar has switched itself off. This happens because Excel’s cloud-based Autosave feature, which continuously saves changes to OneDrive or SharePoint, cannot operate when the workbook references data outside the cloud storage boundary. The … Read more