Reply To: Unable to import .ost file to Office 365 Henry Davidson ~ Modified: February 14th, 2017 ~ ~ 1 Minute Reading Home › Forums › Unable to import .ost file to Office 365 › Reply To: Unable to import .ost file to Office 365 February 14, 2017 at 4:20 am #4085 Score: 0 Henry DavidsonModerator Karma: 31 pts Hello, I am trying to import OST file to Outlook 365. Is there any other solution or I would have to try the above-mentioned solutions? Regards, Henry Davidson Search