"Unable to create an ActiveX object to open the document. This is most likely caused because of the security settings for your browser."

My organization just upgraded from Office 2007 to Office 365. A "File List" on a Confluence page no longer allows a document to be opened for edit. I'm referring to the button on the confluence page, "Edit in Office". We've been on IE11 for 18 mos now so doubt this is the culprit since it worked with Office 2007. I've spent 4 hrs looking into this on the web, but no similar issues related to O365 or Office 13 I could come up with. I'm wondering if this warrants a ticket into Atlassian or if there is some general fix out there that i can suggest to my ITOps team.

Instead of opening the document for edit in Excel or Word, the document opens read-only, and cannot seemingly be saved back to the space as a new version. This behavior applies to documents added before our cutover to O365 and after. There is no workaround I can find - the user has to upload a new version of the file manually (no means to utilize the versioning inside of the file list). Attempting to overwrite the document with the same name (e.g., try doing a save-as) yields the read-only violation. Providing a different file name yields an "Upload Failed" message in the Office app. Here is the path to the file where 'n' is an integer used to store the document I assume.


1 answer

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Paulo Junior Atlassian Team Jul 30, 2015

Hi Paul,


Apparently, the Office Connector doesn't support O365. According to the documentation, the supported platforms are:


SoftwareOperating SystemBrowser
Microsoft Office 2013
  • Windows 7
  • Windows 8
  • Internet Explorer 11
  • Firefox – latest stable version
Microsoft Office XP, 2003, 2007, 2010
  • Windows 7
  • Windows Vista
  • Windows XP (Service Pack 2 or 3)

OpenOffice 2.x – 3.x

  • Windows 7
  • Windows Vista
  • Windows XP (Service Pack 2 or 3)
  • Linux
  • Firefox – latest stable version
  • Internet Explorer supported versions
    (Windows Platforms only)


For more information, feel free to visit: https://confluence.atlassian.com/display/DOC/Office+Connector+Prerequisites

Thanks Paulo. I edited my original post to indicate Office 13 (not 14) - that was a typo. I suppose it is possible that the Office connector doesn't support O365 since it is some hybrid of Office 13, but that seems odd.

Could you do us a favor, Paulo, and determine if Office 13 and office 365 are the same product in terms of support? I dug through the above prerequisites page. I don't see any mention of "365" in it or against your confluence issues backlog, nor any other chatter on the web or in MS support forums about others having my issue (which seems to suggest I may have a general configuration problem in my org's environment). We are using Win7 and IE11. Big thank you!

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