Forum Discussion
Cowork (Frontier) OneDrive/SharePoint document read errors
- Apr 14, 2026
We have the same thing: "persistent authentication issue right now" from reading documents from Sharepoint or OneDrive
I Just tried the same thing ( My tenant in India ) , It worked very well but i got new file in output folder. Also Got message
"Note: I could add the comments into the document, but I wasn't able to overwrite the original file in your OneDrive from here. You'll want to upload the updated version back to SharePoint yourself, or let me know and I can share it another way."
upon cross question to cowork i got Answer :
Honest answer: the SharePoint/OneDrive tools available to me here are read-only — they can download and read files, but there's no upload/overwrite operation exposed. The generic Graph call I have only accepts JSON request bodies, so I can't stream a binary .docx back up through it either.
So the updated file with all the comments sits in your workspace output folder
- danny_grassoApr 17, 2026Brass Contributor
It seems like some fixes might have rolled out. Didn't make any changes to enable. I was able to reference content within SharePoint files through Cowork. Same issue with the file Cowork created not able to upload to SharePoint, but the file was accessible in the Cowork Output folder in OneDrive.