A family of Microsoft relational database management systems designed for ease of use.
We replaced our primary hard drive and reinstalled all software, except that we decided to go with Office Pro 2010 instead of 2007 on Win XP Pro. But then we experienced the same exact problem. We tried everything discussed on this forum and still have the same issue linking to an Outlook folder from Microsoft Access, but only with the main top "Inbox" folder, not with the underlying sub folders. These folders are from the exchange server and we did not have any PST files in our final test, only OST. Since we do not need to cache or use Outlook offline, we even tried deleting all the PST files, which did not help. We also ran updates to the latest service packs and this did not help either.
Again, this problem does not occur with any of the sub-folders that were created beneath the Inbox folder. We thought about removing all the sub-folders as a test, but we ran out of time as we needed to get this system up and running quickly. So we downgraded from Office Pro 2010 to 2007 and now everything works perfectly.
Eventually, everyone at my workplace will soon be upgrading to Office 2010. But for those of us who are MS Access power users, we cannot accept this type of issue for our current solutions unless we find another workaround. And so we are hoping our IT department will own resolving this with Microsoft.