When customer first logs in to website, a cookie is downloaded onto desktop. The cookie restricts logging in to one machine only - the machine where it was downloaded to.
If a user tries to log in from a different machine, they will be denied access.
Problem is that when I try accessing login from the same machine where cookie was downloaded, sometimes the log in is being denied, and sometimes it is not being denied and works perfectly.
This has happened 30 times already over 2 months, each time I have had to set up a new log in for login to work.