Contact your Exchange admin to see if they have disabled password storage.

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, Jerry Shi asked:

| I tried all the solutions I could find with google or in MS's
| knowledge base, which include "control keymgr.dll" and deleting
| protected storage in register. But none of them works.
|
| I am using Windows XP Professional (SP2) and Microsoft Office Outlook
| 2003 (11.6568.6568) SP2. The mail server is an MS exchange server. I
| access it from home through checkpoint VPN.