Forum posts for LogonUI.exe

LogonUI.exe process doesn't terminate after switching user

I am developing a Credential Provider (CP) that shows a dialog at logon or unlock screen of Windows Vista/7. That dialog terminates whenever the destructor of my Credential Provider is invoked. For basic scenarios like unlock or logon, that dialog is closed properly; however, I got into trouble with this scenario:


Lock computer: this will show my dialog
Click 'Other Credentials'
Click 'Switch User'


After step 3, a new dialog is created (a new logonUI process creates my CP) but the dialog in step 1 still exist but hide. I tried to debug and found that the loginUI created in the step 1 is not terminated and still keeps my CP so it is not destructed , then the dialog is not closed.

I expect there is only one dialog exist at a time. Is there any way to ask logonUI to release my CP or catch switch user event so that I can close the dialog on my own?

I am using: Win7 32-bit Ultimate.

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