Outlook 2013 - Exchange 2013 - Prompts for username and password when EWS basic authentication is enabled

So we have an Exchange 2013 environment, and a CRM solution that requires basic authentication to EWS internally.  Problem is, after a reboot of our Exchange server, all of our Outlook clients begin prompting for username and password (which nothing
works) which also starts locking users AD accounts out due to failed login attempts (somehow).  If I disabled basic authentication on EWS, Outlook authenticates as normal using NTLM and there are no issues.  Once Outlook has authenticated, I can
turn back on basic authentication, and Outlook will be fine until the next time the Exchange server is rebooted.
Any ideas?

Hi,
According to your description, I understand that Outlook client prompted for username and password when Exchange server restart and basic authentication is enabled for EWS.
If I misunderstand your concern, please do not hesitate to let me know.
It’s normal. This caused by the difference between basic authentication and NTML authentication:
Basic, with any version of Outlook prior to 2010, results in a pop up dialog asking for creds. Outlook 2010 makes the 'save this password' actually work, so in an Outlook 2010 or later world, Basic can mean no need to authenticate every time you open/reconnect,
but in all earlier versions, you will have to enter creds every time.
NTLM, when used by a client that is domain joined and logged in with cached creds, results in the client simply sending the cached in creds to the server, resulting in what looks like a pretty seamless single sign on experience. However, if you want to do pre-authentication
at something like TMG, and not let the traffic go all the way to CAS, you need to configure TMG for this.
Thanks
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Allen Wang
TechNet Community Support

Similar Messages

  • Prompt for username and password when executing servlet

    In Weblogic 5.1 when I set the username and password in weblogic.properties file, it prompts for the usertname and password when I execute the gatewayServlet
    weblogic.allow.execute.weblogic.servlet.servlets/gateway.administration=vijay
    weblogic.password.vijay=password
    But I guess this is not the way it can be implemented in 8.1. Please let me know how I can prompt for username and password when executing the servlet. I dont want it to be done programatically. Please let me know whether I can set anything on the properties file.
    Thanks
    Vijay Subramanian

    You can use Apache ACLs, http://httpd.apache.org/docs/1.3/howto/auth.html
    GoodEvening!
    I'm developing a web application using jsp
    technology.
    When the user digit:
    http://<machine address>:<port>/<applicationName>
    I would that a browser prompt login is diplayed to
    the user for enter him username and password,
    before loading the index.jsp page. Is possible
    without using awt or swing components?! using only
    the browser's prompt dialog?!
    p.s.
    sorry 4 my bad english! ;-)

  • Word 2010 prompts for username and password when opening a document on trusted website

    Hi Guys,
    We have a website (not sure if the site is a sharepoint site) on our trusted domain that asked for username and password when trying to access it. I added the site to our trusted sites zone and this resolved the issue however when I try to open word documents
    I get prompted for usernames and password again if I cancel the credentials box the document opens with no issues. 
    Below is some of the steps i have taken
    - Tried opening other non office documents (e.g. PDF, JPEG) and they open with no issues
    - Tried to opening the word documents with a system that only had word pad install and not Office 2010 and the documents open with no issues so it looks like it's an office 2010 problem 
    Can you please advise how I can resolve this issue and if this is a client issue or an issue on the web server thanks

    Hi,
    This issue is caused by the Office suit itself. When Internet Explorer opens an Office document, the appropriate Office application is started with the path of the document. The Office application then tries to access the document directly from
    the server. This differs from other browsers and other file types. Most browsers download the file and call the application to open the file from the local cache. However, when this occurs, if the opened file is changed and saved,
    the changes are only made to the local copy and not to the server copy.
    To establish the richest experience possible, the first thing that the Office application does is communicate with the server to determine the server type and what web authoring protocol is available. The application does this by making
    an OPTIONS request directly to the server.
    As a new process accessing the server, the Office application is required to renegotiate authentication. This method is more secure than a method in which the new process uses an existing authentication that was established by the browser. 
    Please try the following methods:
    An alternative with full functionality but with a calculated risk
    Client approaches that can reduce the impact
    Alternative configurations when the web server does not support DAV or reduced functionality is acceptable
    For more detail information, please refer to the following link:
    http://support.microsoft.com/kb/2019105/en-us
    Thanks
    George Zhao
    Forum Support
    Come back and mark the replies as answers if they help and unmark them if they provide no help.
    If you have any feedback on our support, please click "[email protected]"

  • Prompting for UserName and Password when I click Report Server Web Service URLs in ssrs 2008 R2

    Hi All,
                 I am using SQL Server Reporting services 2008 R2 . When I tried to open report server webservice URL in SSRS 2008 R2 It is prompting username and password. I tried to resolve the issue by deleting the <!--
    <RSWindowsNegotiate/> --> line in rsreportserver.config but still I am getting the same prompt
    and i tried by putting the server URL in trusted sites in IE also still no luck. I referred the below link 'http://blogs.msdn.com/b/lukaszp/archive/2008/03/26/solving-the-reporting-services-login-issue-in-the-february-ctp-of-sql-server-2008.aspx'
    I am getting the same error.
    Can anyone help me out to resolve this issue easily.
    Thanks
    Dathy

    Hi Dathy,
    Generally, this is a very common issue in Reporting Services 2008 R2, the blog you post is a good blog that summary the common solutions. If it doesn’t help, could you please try the following:
    Open Internet Explorer, go to Tools and click on Internet Options.
    Under the Security tab, click on Trusted sites and click the Sites button and Add Report Manager/Report Server URL to the trusted sites.
    Then click Custom Level, and check the option Automatic logon with current user name and password.
    Repeat step 3 and step 4 for Local Intranet.
    Hope this helps.
    Thanks,
    Katherine Xiong
    Katherine Xiong
    TechNet Community Support

  • Linksys keep prompting for username and password when trying to forward port

    As when we want to access the linksys router homepage we enter 192.168.1.1, and than we enter our user name and password. This is a normal step. But lately when i wanna forward a port and change the last 3 digit of the ip address, eg. to 101, i keep getting a promt for my user name and password but when i enter it correctly, it sill prompt me no matter whats. I used to forward port with no problem but do not know why this problem started to arise. Can anyone help me with this?
    Btw i am using Linksys B router. THANKS

    were u using the default password ?? because there is a possibility that someone in your neighbourhood must have connected to the wireless network and changed the router login password..
    apart from this i don't see any reason of the old router password not working ..

  • Prompting for username and password for opening

    Hi,
      The domain of my organisation is xyz.com. So when try to access any office doc from the office network it opens the office docs without any prompt in office client. But whenever try to access them using VPN or citrix it asks for the username and password.
    Then if I give credentials or cancel it irrespective of that it opens the doc for me.
    The sites are in trusted zone. It is happening for 2010 and 2013 both. But for pdf it is not prompting.
    Why it is asking for credentials and how to mitigate this so that it opens directly from everywhere.

    You can try to take a fiddler trace in both scenarios and then search for the differences. This issue seems to be related with your network configuration that with the product itself.
    In fiddler you can identify what verb is requesting for credentials and from there you can go further with troubleshooting.
    You can check also this article
    http://blogs.technet.com/b/office_integration__sharepoint/archive/2014/02/24/users-are-prompted-for-username-and-password-when-opening-an-office-file-from-a-web-server.aspx
    MCITP|MCTS SharePoint| SharePoint Performance blog

  • Network printers prompting for username and password

    With the more recent OS upgrades I can now see my printers on my home network. Very cool.  When I select one to print, I am prompted for a username and password. I have tried my network keys with no luck and cannot set a password on my printers. Is this unusual and if not, what should I be using?

    You can try to take a fiddler trace in both scenarios and then search for the differences. This issue seems to be related with your network configuration that with the product itself.
    In fiddler you can identify what verb is requesting for credentials and from there you can go further with troubleshooting.
    You can check also this article
    http://blogs.technet.com/b/office_integration__sharepoint/archive/2014/02/24/users-are-prompted-for-username-and-password-when-opening-an-office-file-from-a-web-server.aspx
    MCITP|MCTS SharePoint| SharePoint Performance blog

  • Outlook 2013 on Windows 8.1 keeps prompting for username and password.

    Hi,
    I have a HP Pavillion TouchSmart laptop with MS Windows 8.1 OS. I had installed MS Outlook 2013 Standard. This laptop is joined to the domain like many of my users, however, it keeps prompting for username and password. The emails are still able to send
    and receive without any problem.
    I have tried to check the connectivity, both cables and wireless are well connected.
    I have tried to reinstall the Outlook 2013, but it still occurs.
    Attempted to recreate profile but it still occurs.
    For the configuration:
    I have selected negotiate authentication, and have unchecked the box that states
    "Always prompt for login credentials"
    Please advise.
    Thank you.

    Hi,
    We can also follow this forum FAQ to troubleshoot this problem:
    Why does Outlook keep prompting for password
    http://social.technet.microsoft.com/Forums/en-US/bcd2d9c2-1a1b-4446-bf32-69fee8cdf11b/why-does-outlook-keep-prompting-for-password?forum=outlook
    Regards,
    Melon Chen
    TechNet Community Support
    It's recommended to download and install
    Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
    programs.

  • Micrsoft Outlook somtimes prompting for username and password

    hello All ,
     I Have Exchange 2010 sp3 installed two mailbox servers & two HUB & CAS Servers  and Outlook sometimes  prompting for username and password .
    how can fix it .
    Thank you

    Hi,
    Please check the following points:
    1. Does the issue happen to your external users or internal users?
    2. For all users or some specific users?
    If the issue happens to internal users, please configure the authentication in Outlook Security tab with Negotiate Authentication to have a try.
    Thanks,
    Winnie Liang
    TechNet Community Support

  • Lync keeps prompting for username and password.

    Hi All,
    Lync 2013 prompt for username and password.  The request for username and password happens intermittently.
    Appreciate any help.
    Thanks
    denciod

    This kb is helpful to troubleshoot this issue:
    https://support.microsoft.com/en-us/kb/2298541
    There are solutions for Lync users and Lync administrators, choose the method depending on your role.
    -Jeff

  • Users prompted for username and password after sharing removed from servers

    Hello Community
        On Sharepoint 2010 Server using the UI in a 2 server farm with an intranet running on it and everything functions as it should.  However it was noticed that from a users computer when in "Windows Explorer" if "Network"
    is clicked the 2 servers are visible.
        The problem is that when the server are clicked on in Windows Explorer the files and folders on the hard drive of the servers are visible too.
        Subsequently I logged onto the server and when into "Properties' - "Sharing" and
    unchecked the checkbox to "Share this folder".
        That solved the problem of the users being able to see and access the files
    and folders on servers hard drives but now when the users log onto the intranet
    they are prompted for a user name and password and even when they provide the user
    name and password and the page is returned the prompt appears on the screen again(then they cancel out).
        What can be done about the user being prompted for username and password without sharing the drives on the servers ?
        Thank you
        Shabeaut

    What exactly was shared out from the SharePoint server's file system? There are certain things that are shared by default.
    Trevor Seward
    Follow or contact me at...
    &nbsp&nbsp
    This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

  • How to make dyn/admin not to prompt for username and password?

    Hello all
    How to make dyn/admin not to prompt for username and password? I am writing a selenium job to automate cache invalidation to load test a production issue we are facing. Selenium is opening a fresh firefox session and prompting for username and password every time. I am also trying to modify my script such that it will use the same session again and not prompt for username and password. But I thought of asking this question in the group.
    Your inputs will help a lot.
    Thanks,
    Sundar

    Hi,
    You can set enabled property of /atg/dynamo/servlet/adminpipeline/AuthenticationServlet/ to false. It will not prompt for authentication.
    Gopi

  • Outlook continually prompting for username and password

    Good Day ,
    I finished migration from exchange 2003 to exchange 2010 and all users are working fine but just few outlook user got problem prompte username and password . have an idea why ? I will be thankful if you can help me
    Regards
    e

    Hey zikorai,
    looking this url: 
    http://www.dslreports.com/forum/r24512375-Outlook-2007-Exchange-2010-prompting-for-usernamepassword
    Please Mark This As Answer if it helps to solve the issue
    Tzuri Ben Ezra | My Certifications:
    CompTIA A+ ,Microsoft MCP, MCTS, MCSA, MCITP
    |
    FaceBook: Tzuri FaceBook | vCard:
    Tzuri vCard | 
    Microsoft ID:
    Microsoft Transcript 
     |

  • Microsoft Office Outlook 2003. Repetitive request for Username and Password.

    Shortly after opening Microsoft Office Outlook 2003 I will be asked for Username and Password repeatedly. How can I stop this from happening?

    Hi,
    To understand more about the issue, I’d like to confirm the following information:
    1. Does the issue still occur if you change another client machine？
    2. Is there any error by testing RPC over HTTPS connectivity through ExRCA?
    https://www.testexchangeconnectivity.com/
    If you have any question, please feel free to let me know.
    Thanks,
    Angela Shi
    TechNet Community Support

  • MS access database prompting for username and  password

    Hello,
      When I try to run a crystal report that is connected to a (Access Database) from crystal server 2013, I get prompted for a username and password. Im not sure what im doing wrong, Ive tried creating a ODBC connection, change the SAP service to run under a domain user account, recreated the report with a different file path.  but still no luck, please help im at a lose.
    Thank you

    Hello,
    Refer please to the following kbas, probably this can help you :
    http://service.sap.com/sap/support/notes/1270997
    http://service.sap.com/sap/support/notes/1661997
    Regards,
    Asma

Maybe you are looking for