Is it patched to current? That's my only guess, as long as the userPrincipalName is properly populated.
I HAVE seen indications that Exchange may eventually require the userPrincipalName to match the primary SMTP address. Could that be an issue here? -----Original Message----- From: Maglinger, Paul [mailto:pmaglin...@scvl.com] Sent: Thursday, April 4, 2013 12:38 PM To: MS-Exchange Admin Issues Subject: User has to enter pre-Windows 2000 login to Exchange 2010 We have an issue that just cropped up this morning. User changed password yesterday morning, brought up Outlook, worked all day with no problems. Shutdown laptop and went home. Didn't use the laptop until she came in this morning. Logged into our Windows domain fine. Tried to bring up Outlook and was prompted for username and password. Entered the password several times and locked out her account. We deleted her mail profile and tried to recreate it, but was prompted for username and password, and again locked out her account. This was using usern...@domain.com as the username. Finally we tried using domain\username with the password and that worked, but it continued to prompt for username and password until we checked "remember". I found a dead-end reference on the web that referred to a username over 20 characters, but have found nothing yet that explains this. Thoughts anyone? -Paul --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist