I was asked by a colleague using Outlook 2003 to archive some of his email to relieve pressure on his large email database. He got me to archive one of the largest folders to a flash drive, which I did. Outlook then of course automatically created a new Data File for the pst file for the archived folder in location E:\. But of course now every time he launches Outlook without the flash drive being present, he gets a message “The path specified for xxx.pst is not valid.” I don’t see a way round this and have suggested we abandon the idea, however he insists he had someone do this for him previously without issue and even claims that he was able to access the emails archived on the flash drive without having to even open Outlook. I’m very unconvinced. Any comments?