We had this problem and found that we had installed the Exchange admin tools, which use a different MAPI32.dll, onto servers that were running Outlook. Removing the tools fixed our problems. Thanks, Adam Shackleford International Infrastructure Mary Kay Inc. Office +1 972 687 5447 Mobile +1 469 767 5447 _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of RMC - Brian Hill Sent: Friday, February 18, 2005 8:24 AM To: 'thin@xxxxxxxxxxxxx' Subject: [THIN] Recently installed program.....Outlook erro This was an error that I got on a recent Office 2003/Server 2003 deployment. "A recently installed program may cause Microsoft Office or other e-mail-enabled programs to function improperly. Outlook can resolve this conflict without affecting the program that originally caused the problem. Do you want Outlook to resolve this problem?" The workaround here http://support.microsoft.com/default.aspx?scid=kb;EN-US;256946 seems to have fixed that problem.