Failure to turn-on WinHello - "Error saving the composite key: value cannot be null. Parameter name: a

[SimoneAvogadro]

Describe the bug When trying to use the plugin on the new Windows 11 laptop (Dell XPS 13) it somewhat fails to properly estabilish security and fails to initialize.

To Reproduce Steps to reproduce the behavior:

1. Open Keepass 2 and unlock a DB
2. Manually go so settings and enable WinHelloUnlock
3. Pick "CreateWinHello unlock data for this Database"
4. Windows popup asking to enter fingerprint (notice: this windows is not on the top but on the bottom.... Keepass2 stays on top)
5. Press the fingerprint and get recognized by Windows
6. get a popup error saying: "Error saving the composite key: il valore non può essere null. Nome parametro: a" (the second part translates to: "value cannot be null. Parameter name: a")

Expected behavior On other machines this procedure completes correctly and allows to use winhello unlock

Screenshots

Additional context I'm using a keepass 2 DBX file stored inside Dropbox I'm sharing the same DB across 3 different systems:

• 1 Windows 10 Pro: works like a charm
• 1 Android phone using Keepass2Droid: works
• 1 Windows 11 Pro: I've the above issue

I'd be more then happy to turn on debug and provide logs if needed (please tell me how)