Office 365 Groups on Outlook 2010

Fabio Fiorio No, it requires Outlook 2016 to fully support Office 365 Groups

https://www.microsoft.com/en-us/microsoft-365/blog/2015/09/22/introducing-availability-of-office-365-groups-in-outlook-2016/

For older Outlook clients there was some guidance here, including:

“Users using Outlook 2013 client should be able participate in Groups. They can send and receive emails to groups using Outlook 2013. All new functionality for Groups will only be available in Outlook 2016.“

https://office365.uservoice.com/forums/286611-office-365-groups/suggestions/8068029-show-groups-in-outlook-2013-client