The Messaging Interface has returned an unknown error
Posted on 2011-10-26
I have a VIP at Timken, Vice President actually who has an oversized pre-2003 PST file. Limit is 2GB i know, and he is at 199999 nearly. THe PST needs to be exported and / or archived to a new PST. (2003 or higher), with a size limit of 20gb.
I cant access any of his pst data once i ran the scan pst file to fix his pst. I always get the following message when trying to open folders within the PST:
"The messaging interface returned and unknown error. If the problem persists, restart outlook."
I have restarted outlook as you may have guessed, and also rebuilt his Mail profile.
We have a backup of the pst if that needs to be recovered, but i fear the same will happen with the restored data. Please advise and know i have ran the SCANPST.EXE twice on the pst file already.