Our team just came back to me and would need to you to confirm the following information:
- Are you able to use the Asana add-on from outlook.office.com (web version)
- We suspect this issue could have to do with Internet Explorer security settings since you are using desktop Outlook on windows. Could you try temporarily lowering you security settings to see if that helps (https://support.microsoft.com/en-us/help/17479/windows-internet-explorer-11-change-security-privacy-settings)?
Again, my apologies for the trouble and inconvenience; we appreciate your patience and look forward to your reply.