Resolution
fact
Exchange Migrator 1.x
fact
Exchange Migrator 2.x
symptom
Error: Exception thrown in LookupNTMapping [HR=0x80040e37]
cause
Invalid version of MAPI32.DLL was being used.
fix
The version in Winnt\System32 should match the version in the exchsrv\bin directory. (5.x for 5.5 to 5.5 migrations, 6.x for 5.5 to 2000/2003 migrations). Update the MAPI32.dll file by copying the one located in exchsrv\bin to \Winnt\system32.
Exchange Migrator 1.x
fact
Exchange Migrator 2.x
symptom
Error: Exception thrown in LookupNTMapping [HR=0x80040e37]
cause
Invalid version of MAPI32.DLL was being used.
fix
The version in Winnt\System32 should match the version in the exchsrv\bin directory. (5.x for 5.5 to 5.5 migrations, 6.x for 5.5 to 2000/2003 migrations). Update the MAPI32.dll file by copying the one located in exchsrv\bin to \Winnt\system32.
Additional Information
Formerly known as NETIQKB18037