| ”Microsoft rejected these credentials” | Wrong tenant ID or client ID, the secret’s ID was entered instead of its Value, or the secret expired | Create a new client secret if needed, then update the source. |
| ”The app cannot read this site” | Sites.Read.All or Files.Read.All is missing, or admin consent wasn’t granted | Add both as Application permissions and click Grant admin consent. |
| ”SharePoint site not found” | The site URL is mistyped, or the site was removed | Open the site in your browser and paste its address. |
| ”Paste the site’s home URL” | The address is a OneDrive link, the bare /sites page, or a page that doesn’t name a site | Use the site’s home address, like https://contoso.sharepoint.com/sites/support, or a sharing link to a file in the site. |
| ”Microsoft is unavailable right now” | Microsoft didn’t answer or is limiting requests | Wait a moment and connect again. Your details were not the problem. |
| ”Folder not found in any document library” | The folder path includes the library name, or has a typo | Enter the path from the top of the library, for example Customer FAQs/Public rather than Shared Documents/Customer FAQs/Public. |
| Syncs stopped after working | The client secret expired | Create a new client secret and update the source. |
| A file is missing | The type isn’t supported, it’s in another site or folder, it has no extractable text, or it’s a workbook over 10 MB | Check the limits. Scanned PDFs need text recognition applied before upload. |
| Site pages are missing | Only files in document libraries are synced | Export the page to PDF into a library, or use the website crawler if the page is public. |
| An Excel sheet is missing | The sheet is hidden, or the workbook passed the text limit | Unhide the sheet, or split the workbook. |
| The AI answers from a file you want hidden | New files are public by default | Use the eye icon on the item, or Hide all from AI on the folder. |
| None of the above | — | Contact support with the site URL and a sample file name. |
