I have created a standard - non-admin - user account on my Windows 8.1 Pro 64 Bit computer for sharing purposes only. I never log into the computer using that account. I use it only so my scanner can write to certain shared directories. (I don't trust my scanner with my real password.)
Every few months, sometimes twice within a month - the account loses its password. The scanner issues a "bad password or user account" error. Then I have to log into the admin user and reset the password and everything works fine for a month or two. I use the scanner at least twice a week.
I tried looking in the Event Viewer (eventvwr.exe) but I don't know how to filter for user account related issues.
I've tried googling the question, but I have not been able to word the search query so it gives meaningful results.
Is there a password expiration policy for Windows 8.1 that I don't know about? What events in the Event Viewer would give me some information on why this happens?