Sponsor accounts become disabled for no apparent reason

Question

We use three different sponsor accounts to manage guest logons on ISE. These work fine a few times but the accounts become disabled after a short period of time. We don't know when and how often this happens, but virtually every time one of the sponsors attempts to login to the sponsor portal they are denied access with the message "user disabled". When we check in the administration portal, indeed all three sponsor accounts are disabled. We enable all three accounts and everything works again - for a while.
We have no idea when (not to mention: why) the accounts become disabled. There seem to be no alarms or warnings generated. What can be done?

Answer 1

Andreas,
This may be a simple password policy that is a default on the ISE.
Check by going to:  Administration > Identity Management > Settings
Choose User Password Policy from the menu on the left.
Look under Password Lifetime.  If "Disable user account after 60 days if password was not changed" is checked, then this is your issue.
I have attached a screenshot of the page and note that mine is checked (only for illustration purposes).
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Charles Moreton