I have tried repairing/uninstalling-reinstalling QuickBooks and Office/Excel multiple times. I really don't want to go back to 32-bit version of Excel (32-bit Excel can't handle some of the datafiles I deal with).

I talked to the support on the phone about a month ago. They gave me Case # ([removed]). They said they know about this issue and are working to resolve it.

I posed it in online support community because it's been over a month, and haven't received any further response from QuickBooks Technical Support.

Since you suggested installing 32-bit Excel - does it mean that this issue is really related to 64-bit version of Excel compatibility with QuickBooks?