i have a user within our office getting the error message "The operation has failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook." when he is saving emails out of his inbox (outlook 2010) to a server location. This does not happen all the time, it happens at random. Then when the user tries to save the same exact email again to the location it works. Any ideas how to fix this? Thanks
we are running Windows 7 64bit & Office 2010.