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Can't add SharePoint source: "This item could not be found… Copy Link"

Mitigatedsince 8 July 2026

Last verified

Details & related

Assessment

Confidence
Confirmed officialConfirmed by Microsoft documentation or an official statement.
Severity
Blocking
Typical time lost
Hours

Identification

Knowledge & grounding

Verification & changes

  1. Verified

    Doc check by human: Official SharePoint knowledge docs and dossier section A1 re-read during seed migration; error string and URL rules unchanged.

  2. Change

    Provisionally approved by the Product Owner; external LLM quality review pending.

  3. Change

    Initial record created from the seed dossier (migration wave 1).

Related

Are you in the right place?

  • You are adding a SharePoint site or library as a knowledge source in Copilot Studio.
  • The dialog rejects your URL with exactly this error message. This item could not be found. Please use the Copy Link button from the Share menu
  • You copied the URL from the browser's address bar.
  • Or your link points at the site's home page or a single file.
  • The same account can open the site in the browser without problems.

If instead the source is added but PDFs are ignored → see Your PDF files are ignored or not answered. If instead every knowledge query returns nothing at all → see Knowledge returns nothing — and no error is shown.

What's happening

Copilot Studio validates your SharePoint address before it accepts it as a source. A browser address-bar URL carries page paths and parameters the validator does not recognize. Links to a site's home page or to a single file are rejected too. The dialog wants a "Copy link" URL that points at a site, library, or folder. Your permissions matter as well: you must be able to open what you connect. Think of a postal address: the courier needs the street entrance, not your living-room window. The error text itself names the fix — the "Copy Link" button in SharePoint's "Share" menu.

For technicians
  • Recognized SharePoint URLs come from the sharepoint.com domain; the https:// prefix is omitted (documented as of 2026-07-08).
  • Sites with accordion navigation or custom CSS aren't used as sources, documented as of 2026-07-08.
  • Queries that reference a document by its file name can't be answered from SharePoint sources.
  • SharePoint lists with more than 12 lookup columns in the default view aren't supported, documented as of 2026-07-08.

How to fix it

Solution 1

Official workaround

Use a "Copy link" URL at library or folder level

  1. Open the SharePoint site in your browser.
  2. Go to the document library or folder that holds your files.
  3. Select "Share".
  4. Select "Copy link".

✅ You should now see: a confirmation that the link was copied.

  1. In Copilot Studio, open your agent and select "Knowledge".
  2. Select "Add knowledge", then choose SharePoint.
  3. Paste the copied link; you can omit the https:// prefix.
  4. Confirm to add the source.

✅ You should now see: the SharePoint source listed under "Knowledge" without an error message.

Check that it worked

Ask a question whose answer only exists in a document inside that library. Use the test pane. Expected: an answer that cites the document.

If it didn't work

  • Wrong link level. Copy the link from the library view, not from an open document.
  • Permissions block the connection. Check that you can open the library with the account that creates the source.
  • The site uses a custom layout. Sites with accordion navigation or custom CSS aren't used, documented as of 2026-07-08.
  • The document is protected. Scanned or protected PDFs stay ignored even after the source is added. See Your PDF files are ignored or not answered.

Prevent it next time

  • Put a URL rule in your setup checklist: SharePoint sources use "Copy link" URLs at library level.
  • Audit new document libraries for protected or scanned files before you connect them.

Evidence

  • Official documentationlearn.microsoft.com

    The official guidance on SharePoint sources for generative answers specifies the supported URL formats and content types.

  • Official documentationlearn.microsoft.com

    Documents SharePoint source restrictions, including URL format rules and unsupported list and site layouts.

  • Official documentationlearn.microsoft.com

    The knowledge sources summary documents SharePoint as a knowledge source type and its authentication requirements.