However, this action does not guarantee that this behavior will not occur again. To reduce the chances that you will be prompted for your user credentials, select NTLM Authentication for the RPC/HTTP proxy authentication settings.
OUTLOOK 2010 EMAIL KEEPS ASKING FOR PASSWORD PASSWORD
To prevent Outlook 2003 from switching to offline mode, type the user name and the password in the Enter password dialog box. For Outlook 2007, just follow the path Tools>Account Settings. Step 1: Open your Outlook and then follow the path to find Account Settings. To solve this problem, you can follow the under steps. If RPC/HTTP is configured to use basic authentication, you are prompted for your user credentials. When you log in Outlook with an Exchange account, the Outlook may keep asking for password due to some internal settings. email still works just fine but its very annoying. but then after a while even when ie is open outlook ask for a password. When the first attempt fails, Outlook 2003 tries to establish an RPC/HTTP connection. it was working at some point, then it start asking for password, I found out that when you open internet explorer and go to any website fixes it.
If the network adaptor is not ready, the attempt by Outlook 2003 fails. When this behavior occurs, Outlook 2003 tries to establish a TCP/IP connection to the server that is running Microsoft Exchange Server as soon as the network is available again.
This behavior occurs if the computer loses network connectivity for some time and then reestablishes network connectivity.
Additionally, if you click Cancel in the Enter password dialog box, Outlook 2003 switches to offline mode. You are unexpectedly prompted for your user credentials in Microsoft Office Outlook 2003. Searching for Outlook 2003 ‘prompt for password’ gives quite a few hits.