published calendars are always read-only. Diane Poremsky [MVP - Outlook] Outlook Tips: http://www.outlook-tips.net/ Outlook & Exchange Solutions Center: http://www.slipstick.com/ OutlookForums http://www.outlookforums.com "Ian R" wrote in message news:MPG.280ac580a835c18398968b@news.btinternet.com... Hi I'm using OL2010. Ive set up a shared Internet calender so that a colleague can view it. I don't use Exchange server so I publish it to Microsoft Office Online with my live ID. Is it possible for my colleague to add or alter entries in the shared calendar or is it view only? Thanks Ian