why is my outlook calendar not syncing with laptop

One user that has an iPhone, Android phone and Galaxy Note tablet showed me that appointments input on the mobile devices sync to each other, but not to Outlook. However, appointments input on the mobile devices do not sync up to Exchange/Outlook. You can input them and watch them appear on your mobile device a few seconds later. In our case, we have both iPhones and Androids which will quite happily sync calendar appointments input in Outlook 2010 with Exchange 2003. If I may revive this thread, I've tried running Calcheck and this has not resolved our (similar) problem. That's about it from the stuff I have seen. I have seen some weird issues with calendars on older Exchange 2003 servers due to issues with ActiveSync that were eventually fixed, but only in later editions (most often I'd see appointments you couldn't actually accept on the phone). But you can still narrow things down with this - you know it's not the 'hardware', but I'd imagine the upgrade from 4>5 took all the settings with it. This is probably just a troubleshooting step, as there are probably other settings in the phone that the user would like to keep. Set up the account on a different phone and see if it does the same thing. Remove the Exchange account wait a bit and then add it back. This will totally reload the calendar from the iPhone's perspective. Turn the calendar off (in mail settings) wait a bit and then turn it back on. Just from generic iPhone troubleshooting things to try are:

Why is my outlook calendar not syncing with laptop