With Lotus Notes® Single Logon enabled, you change your password via the operating system (Ctrl+Alt+Del, change password). When you reopen Notes, however, you receive a prompt that the passwords are different. Why didn’t the passwords synchronize?
Cause
This behavior is known to occur when the Notes ID is stored on a network drive, which is an unsupported configured for Notes Single Logon.
Solution
Password synchronization should occur once your Notes ID is moved to a local drive. An enhancement request to allow IDs to be stored on a network drive has been submitted to Quality Engineering as SPR# KTOT6Y2R5B.