Notes still prompts for password with Notes Single Logon enabled

Problem

User is prompted for password even though Notes Single Logon is enabled.

Symptom

User is prompted for password even though Notes Single Logon is enabled.

Diagnosing the problem

NSL service is shown to be running and password matches Windows password. Reviewing Network Provider Order in UI or registry shows an entry for IntelNetProvCredMan just before the Lotus Notes Single Logon entry.

Resolving the problem

Intel Credentials Manager is a Network Provider that can interfere with the proper function of Notes Single Logon. The Lotus Notes Single Logon service must be listed prior to Intel Credential Manager (which appears in the list as IntelNetProvCredMan) for proper functioning. Access Control Panel -> Network Connections -> Advanced (menu) -> Advanced Settings (menu option) -> Provider Order (tab) -> Network Providers (section). Check for IntelNetProvCredMan. If present and listed prior to Lotus Notes Single Logon, select it and use the down arrow to move it to the bottom of the list.