Forum Discussion
Microsoft Online Services Sign In Assistant
Hello team,
we are looking to roll out office 365. we plan to deploy office 365 pro-plus eventually, but the company needs more proper analysis of the current application compatibility. The project team wants us to deploy exchange online ASAP for quick positive perception of the project, however all users still run on outlook 2010. My question is for outlook 2010 to work with office 365 properly, do we still need to deploy Microsoft online services sign in assistant (MOS-SIA) to all users client PC? what is the effect of this if we eventually upgrade everyone to office 365 proplus?
Regards
Victor
Office 2010 is out of mainstream support so you should really be moving to a newer version. That said, it should still be able to connect to Exchange Online. The sign-in assistant is only needed for federated scenarios.
You will however face certain issues, such as the fact that Outlook 2010 does not support Modern authentication, as well as many missing features. Moreover, Microsoft's support stance is changing soon: https://techcommunity.microsoft.com/t5/Office-365-Blog/Office-365-system-requirements-changes-for-Office-client/ba-p/62327
Great Vasil. Thanks for the quick response and wealth of info.
