How do I prevent Outlook from asking for credentials, after manually creating an Outlook profile?
If Outlook profiles are created manually or by using Exchange AutoDiscover, users may be prompted for their Exchange credentials when launching Outlook.
In these cases, a Windows Security dialog box will pop up after Outlook launches, as in the screen shot below. Normally this can be fixed by checking the Remember my credentials checkbox after entering your credentials, and clicking the OK button.
However, in some cases, it asks for Exchange credentials every time when launching Microsoft Outlook, but there is no option for Remember my credentials in the Windows Security dialog box.
To prevent Microsoft Outlook from asking for Exchange credentials each time when launching, you can change some Exchange settings under Account Settings.
Follow these steps:
Open the Account Settings dialog box:
In Outlook 2007, click Tools > Account Settings.
In Outlook 2010+, click File > Info > Account Settings > Account Settings.
In the Account Settings dialog box, go to the E-mail tab > click to highlight the Exchange account that asks for logon credentials every time Microsoft Outlook is opened > click the Change button.
In the new dialog box of Change Account, click the More Settings button.
In the Microsoft Exchange dialog box, go to the Security tab > Uncheck the option for Always prompt for logon credentials > click the OK button.
At the Change Account dialog box, click on the Next button > click on the Finish button.
Click the Close button to exit the Account Settings dialog box.