I'm working on a project where we've migrated our user base from Windows XP to Windows 7 Enterprise. They're using Office 2010 Pro. I'm seeing this issue with only one specific user, and not really sure where to start with his troubleshooting. Have read through some forums, but doesn't seem to be a prevalent issue.
We've migrated his .NK2 file and most of his email cache is working. As he begins to type the address, it drops down with suggested emails. However, there are two specific addresses in the GAL which will not cache. I had him manually click on the 'To...' button in a new message, search the GAL for the user, click 'To...' once again in the bottom left of the address book to add the address to the message, click okay, and send the message. Normally this would be more than enough to get it to cache, but no such luck.
Any assistance would be greatly appreciated guys.