Try creating a new PST for the user and importing mails from old on. This usually works for me. -----Original Message----- From: Kenny Lee [mailto:kennylee@xxxxxxxxxxx] Sent: Wednesday, March 31, 2004 9:03 AM To: [ExchangeList] Subject: [exchangelist] Outlook XP error message when trying to delete mail on a personal folder http://www.MSExchange.org/ Hi, Need assistance from here. One of my users trying to delete mail from the personal folder which is only 1GB size. Not over the limited size yet for personal folder. Error message as followed : "The messaging interface has returned an unknown error. If he problem persists, restart Outlook" Client Version : Outlook 2002 10.4712.4219 SP-2 1) Have tried ScanPst, to no avail. 2) Compact Now. Thanks in advanced.. rgds, ken ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------