Error code 2147746132: Class not registered When using MsimportExport When attempting to import an xml back up file, msimport reports the following error: Error: 2147746132(0x80040154) in function "CoCreateInstance()" Error code 2147746132: Class not registered To correct this problem, be sure msxml3.dll is installed on the mailserver. Msxml is a dll which is used to parse the xml files.