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The user can see the site in a browser but not via API.
The SharePoint connector in Power Automate uses the REST API, which sometimes enforces different permissions than browsing in the UI.
The user is not a member of the default Members group.
For example, if the user only has Limited Access via sharing links or specific folder permissions, the site will not appear in dropdowns.
You need at least Read permissions at the site level (not only on a folder).
The Document Library itself has unique permissions.
Even if you see the site, the connector can’t enumerate libraries without Read access.
The site was very recently created.
SharePoint indexing takes time (sometimes a few hours).
This can delay visibility in the dropdown.
The site is a private Teams-connected site.
Sometimes private sites behave differently in the connector.
If I have answered your question, please mark it as the preferred solution ✅ . If you like my response, please give it a Thumbs Up 👍. Regards, Riyaz
Even if the site doesn't appear in the dropdown, you can still use it:
In the “Site Address” field, click “Enter custom value”
Paste the full SharePoint site URL:
https://<tenant>.sharepoint.com/sites/<sitename>
Power Automate will validate the URL and let you use it
This works even if dropdowns fail due to caching or enumeration errors.
Ensure the user has at least "Read" permission at the site level, not just at a folder or file.
Steps:
Go to SharePoint → Site Settings → Site Permissions
Ensure user is part of Site Members or has direct Read/Edit access to the root site
If they only have shared access to a file or folder (not the whole site), they won’t see the site in dropdown
Go to the library (e.g., “Documents”)
Library Settings → Permissions for this document library
If it says “This library has unique permissions,” ensure user has access here as well
Go to Power Automate → Data > Connections
Locate the SharePoint connection used
Click ... > Switch account
Re-authenticate using the same user
Reopen the flow and check if the site appears
Fixes many token- or cache-related issues.
If the user was recently added:
Wait 30 minutes–2 hours
Or ask a site admin to:
Add them to the Site Members group
Verify access via “Check Permissions” in Site Permissions
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