Error: Unknown Security Method - macOS-Version / Known Issues / Bank errors - Outbank Helpdesk

Error: Unknown Security Method

If this message appears, the bank access has to be updated - Outbank will update it automatically with the next account refresh. If necessary, please choose the correct security method afterwards.

You can also update the bank access in the settings of your app manually:
'Settings'> 'Access data'> 'Select bank access'> 'Update access profile'