Hi,
We have recently migrated from Exchange server 2010 running on SBS 2011 to a standalone Excchange 2013 server. Since doing so, we are getting the password prompt repeatedly appearing when using exchange. This seems to be caused by the logon network security setting defaulting to Anonymous Authentication, and is resolved by changing this setting to "Negotiate Authentication". However, this setting is reverting to anonymous when the clients PC is restarted.
I am assuming this is due to autodiscover settings refreshing this option, however I cannot find the autodiscover settings to alter this. I have checked the autodiscover settings within exchange administration and these appear to be correct, this applies to outlook anywehere as well.
I know this may be a bit vague, if you require any further info I will try my best to provide.
Thanks,
Dan.