Quote Originally Posted by tvadpro View Post
I did stumble across a customer log-in problem a few weeks back, but I assumed it was a sessions problem and not an SEO-URLs problem. After adjusting one of my Admin/Sessions settings (I forget which one, sorry), the problem went away. At very least, my customers have reported no problems creating accounts and logging in -- and I'm not seeing any carts abandoned. Just to be safe, I created a test customer account just now, then logged out and successfully logged back in. Is the log-in problem erratic, or has anyone reported a persistent misbehavior?

If the change in the sessions setting did the trick, I assure you the discovery was by accident.

For whatever it's worth, here are my current Admin/Sessions settings:
  • Cookie Domain True
  • Force Cookie Use False
  • Check SSL Session ID False
  • Check User Agent False
  • Check IP Address False
  • Prevent Spider Sessions True
  • Recreate Session False
  • IP to Host Conversion Status false
Although the problem is erractic, your session setting is different. I think this is the only time that I have seen some post Recreate Session False. Usually is set to true to prevent the situation when the search engine index a url with the session. If two customer simultaneously access the site using the same url they will share session ID but setting that option to TRUE prevent possibility of sharing account.

Perhaps that setting solves the problem. The Login issue was erratic in the past, we could test login 100 times and only experience the error 1-3 times. Basically, this only happens to existing customers trying to re-login to an account that has already been created.

Do you get a lot of customers (about 50) a day that logs into their account?