My Contacts folder takes over 4 minutes to open. It could be a result of a
ill-advised attempt to import an Excel spreadsheet of contacts that resulted
in over 15,000 entries in Outlook Contacts (I apparently didn't map
properly). I deleted all of them (very painful task) but there appears to be
a residual effect.

My Inbox, Calendar and other folders take less than a second to open.

Are there any hidden files or temp folders or some other information that
Contacts must still look through before it opens (15,000+ of them)?

Thanks

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VPaul