Home › Forums › DocXtender and NavXtender › DocXtender: Undefined Response from largeFileUpload. Cannot Retrieve Sharepoint
Tagged: DocXtender
-
AuthorPosts
-
Stijn Bossuyt
September 19, 2025 at 12:28 amPost count: 5Hello,
Some users are getting this error when dropping a file on the drag & drop box.
DocXtender: Undefined Response from largeFileUpload. Cannot Retrieve Sharepoint URL
When I try it, it works fine. However my user was the first one to use the exentension
Br,
Stijn
Terri Vaive
September 19, 2025 at 12:54 pmPost count: 506::Hello Stijn,
If your user experiences file drag and drop issues, please check if permissions are assigned:
Configure DocXtender PermissionsAlso, check the setup:
Configure DocXtender SetupThank you,
Sergiy Yakovlev
October 28, 2025 at 4:44 amPost count: 3::Hi! Me and my users are getting the same error message after yesterday night’s update 🙁 ext version: 2.4.9351.1, BC Version: 26.0.30643.35618
DocXtender: Undefined Response from largeFileUpload. Cannot Retrieve Sharepoint URL
I’ve got SUPER permissions, but also explicitly assigned dedicated Insight Works permissions as Terri kindly suggested.
Interestingly Drag & Drop is working as expected for items that already have a folder with attachments in sharepoint, so it seems it’s struggling with creating new folders?
when I’m trying to create a folder/file in the same site/library manually in sharepoint it works fine.
Any suggestions please?
thanks in advance, Sergiy
Travis Plett
October 28, 2025 at 12:15 pmPost count: 325::That error is coming from SharePoint, not from DocXtender. A couple of things you can check:1. Make sure that pop-ups and URL links are not being blocked in the browser or by a third party security application on the workstation. Check the workstation and browser for all security apps including: browser add-ons, firewall, anti-virus, anti-malware, popup blocker, spam blocker, app approvals. A good test would be to try it on a brand new PC or VM that has nothing but the operating system installed.2. The user must be able to open the SharePoint site in the same browser as Business Central without being prompted to login or an app approval. If they are prompted, DocXtender will not be able to connect automatically. The login is just cached in a browser SharePoint cookie, nothing is stored in Business Central. This is exactly the same as if you log into SharePoint and use the “remember me” option. You can try a different browser, but do not use private/incognito more or log out of the Microsoft login since that will prompt you to log into SharePoint again. If the browser cannot save the SharePoint login it will not be able to retrieve the link after the file is sent. If you are having issues eliminating the admin approval prompt, you would need to talk to your SharePoint partner or Microsoft. You may need to construct a URL to grant the needed permissions. The information is in the following link from Microsoft: https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/grant-admin-consent
Sergiy Yakovlev
October 29, 2025 at 3:24 amPost count: 3::hi Travis, thank you for the answer. It would all make perfect sense if I weren’t able to load any files via Drag & Drop. But how can it work flawlessly for existing items if there’s an issue with security/permissions? I’m not suggesting that something is wrong with DocXtender but I believe something changed in the extension during the upgrade, because it literally stopped working after the extension was updated.
thanks in advance again,
Sergiy
Travis Plett
October 29, 2025 at 11:20 amPost count: 325::DocXtender does not manage the SharePoint login, so we don’t have details in Business Central on exactly why it is failing. The wording of the message, especially when intermittent, sounds like SharePoint is timing out. It could be that the user has access to add files to existing folders, but do not have access to make new folders. We just list the settings that everyone else is using successfully to ensure that the browser can connect to SharePoint.
Thayer Coburn
February 3, 2026 at 9:48 amPost count: 5
Travis Plett
February 4, 2026 at 8:22 amPost count: 325::DocXtender does not manage your SharePoint login, so if the user’s password has changed, log back into SharePoint manually before attempting to attach new files in Business Central. The user must be able to open the SharePoint site in the same browser as Business Central without being prompted to login, MFA or an app approval. If they are prompted, DocXtender will not be able to connect automatically. The login is just cached in a browser SharePoint cookie, nothing is stored in Business Central. After a password change, you may have to clear the browser cookies to force a new connection to SharePoint.
Thayer Coburn
February 4, 2026 at 8:38 amPost count: 5
David Vila
February 17, 2026 at 3:53 amPost count: 1::I’ve encountered the same error with a customer, and we identified that since the latest DocXtender update, the folders where DocXtender sends the files have changed. Previously, the folders were named “Sales Header”, but now it has created “Cab. venta” since we work in Spanish. The customer didn’t give employees the proper permissions to the new folders, so no one could attach documents to SharePoint. Now that they are aware of the new folders, they can assign the correct permissions and everything works normally.
<div>From this issue, I have a question: what criterion does DocXtender use to name the folders? Does it depend on the user configuration in Business Central and the language they are using? I would appreciate it if you could confirm this.
Thanks.
</div>
Travis Plett
February 17, 2026 at 9:36 amPost count: 325::The root folder is configured on the DocXtender Setup page: http://kb.dmsiworks.com/knowledge-base/initial-configuration/
The SharePoint subfolders will be created based on the card that the document is attached to and are not configurable or extendable. This folder structure is hard coded to guarantee each path is unique:
– SharePoint Host– (Host from setup)– SharePoint Site – (Site from setup)
– SharePoint Library (Documents – non-configurable)
– SharePoint Folder – (Folder from setup – optional)
– Document Type – (From the Caption of the table – i.e. Sales Order)
– Document Number – (From the single primary key of the record)
– Attachments – (files) -
AuthorPosts
- You must be logged in to reply to this topic.