I have a 2002 eMac OS X 10.4.11 bought second hand 5 years ago.
I have been successfully using Entourage for all my email.
On Friday the system updates required(?) me to update Adobe Reader.
Immediately afterwards there appeared an update for Microsoft Office 2004 for Mac. I let it run the update.
A new and different Entourage appeared, without all my emails, addresses etc.
Just one email in it welcoming me to 'Microsoft office 2004 for Mac 11.6.3 update'.
I don't have OS X 11.6.3
I have tried everything to get rid of this and get my old Entourage back.
I tried to Edit the Accounts in Entourage - tools - Mail (tab) but it won't highlight the Edit, so I couldn't configure it manually, and delete the existing Entourage Account.
I tried putting Microsoft Office into the Trash but that didn't seem to work either.
Nothing seems to work.
Restore your backup