How to access a SharePoint Online server via CMIS?

The URL to the server is https://xyz.sharepoint.com but apparently the following CMIS URLs do not work:


This Microsoft document says "CMIS is not supported in SharePoint Online" but I am not sure the information is up-to-date. By the way, I am OK with third-party add-ons.

Is there any trick or third-party add-on/gateway or similar that would enable us to access SharePoint Online via CMIS?

1 Answer 1


Actually it seems that CMIS was half-implemented in Office365, but Microsoft voluntarily disabled it (URL broken after Microsoft reorganized their forums).

CMIS is a protocol for interoperability, and it seems like Microsoft wants to prevent interoperability for Office365, presumably to prevent locked-in customers from migrating to more open solutions like Alfresco.

Companies who want CMIS interoperability should stay away from Office365 and install SharePoint on-premise.

I asked Microsoft to implement CMIS in all SharePoint products, and it became the highest-voted idea on UserVoice. Facing that, Microsoft deleted it, showing that they still consider vendor lock-in as a feature rather than a bug. Let's not loose hope that Microsoft will one day become a bit more open, so please vote for the re-created idea.

  • The uservoice link has been deleted, but I found a new one here. Please vote for this if you need it, We are using a IBM tool that would go really well with this interoperability.
    – Deepak
    Aug 21, 2019 at 23:06
  • 1
    Thanks a lot @Deepak I added your link to the answer :-) Aug 22, 2019 at 2:37

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