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Proxy pop-up issue

Discussion in 'Internet, Connectivity and Communications' started by Arroryn, Mar 3, 2009.

  1. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    I wasn't sure where else to put this (wonderful) query so this poor forum gets it.

    We have a user who frequently gets a pop-up requesting proxy authentication when she's browsing the internet.

    She's a member of all the correct groups required for internet access in AD, and her colleagues around her in the same office don't get this problem. They all go through the same proxy server (though we have tried her on our backup proxy for completeness and the issue still occurs).

    - We have swapped her device
    - We have re-created her profile (which isn't roaming anyway)
    - We have changed her NT account (not renamed, but given her an entirely new one)

    The new NT account tested okay for 24 hours (tested by IT), but the testing was done without her Exchange mailbox added on. When we tagged on the Exchange mailbox, the pop-up re-appeared when she was browsing.

    The original NT user account had an 11 character length, and her primary SMTP address was the same as her NT login (though I don't think or see any reason why Exchange in any form would be the culprit?)

    We are really stumped now as to what might be the problem - any ideas? Her group memberships on the proxy, in AD, her internet settings, all match those of "working" users.

    Halp!?

    EDIT: the user has XP Professional SP2, and uses IE6. Upgrading to IE7 is not an option for us, though she has been tested on an IE7 machine (in IT) and the issue carries around.
     
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  2. craigie

    craigie Terabyte Poster

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    Have you been through and checked all the usual suspects?

    - IE6 > Tools > Internet Options > Connections > LAN Settings
    - Security Settings
    - Advanced Settings

    To check that these are the same as another users account who does not get the issues.

    Anything in the Event Logs?
     
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  3. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    Yeah all local IE settings (LAN settings, advanced et al) are configured to a master image. Users do not change these (and we double checked!) :)

    I haven't checked her event log tbh - is there a way I can get to these on her PC without actually taking a remote session?

    Thanks Craigie :)
     
    Certifications: A+, N+, MCDST, 70-410, 70-411
    WIP: Modern Languages BA
  4. craigie

    craigie Terabyte Poster

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    Depending on the security settings you have in place.

    Locally, you can just type Eventvwr in the run box or if this does not work, create a cmd shortcut on her desktop. Run as yourself and then type Eventvwr to check the logs.

    Alternatively from your machine, right click your 'My Computer' > Manage > Right Click Computer Management (Local) > Connect To Another PC > Enter PCID > Check Event Logs

    Let us know what you find.
     
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  5. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    Hokey I've checked the Event Viewer (waited till user had gone home) there is, unfortunately, nothing useful to speak of. No errors around the times the pop-ups have been reported, no nothing.

    More halp! :)
     
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  6. danlewis88

    danlewis88 Bit Poster

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    Has the user changed the password recently?
    Might want to go into Control Panel>User Accounts>Advanced>Manage Passwords.
    Or maybe going into cmd and typing "netsh int ip reset reset.log" and then restarting.
     
    WIP: MCDST, MCSE
  7. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    Users are unable to change their own passwords; it hasn't been changed by IT.
     
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    WIP: Modern Languages BA
  8. danlewis88

    danlewis88 Bit Poster

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    Have to cleared the internet settings? (Cookies, offline files etc)
     
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  9. Qs

    Qs Semi-Honorary Member Gold Member

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    Sounds to me like it's something to do with authentication between the client and the exchange server.

    Try the following:-

    Inside Outlook...

    -> Tools -> Email Accounts -> View or Change Existing -> Change button -> More Settings -> Security Tab -> Choose Kerberos/NTLM authentication for the network security

    Also, check the following (less important):-

    In the More Settings window -> Connection tab -> Exchange over the internet using HTTP -> Choose NTLM authentication for proxy server connections to the exchange

    Afterwards, close Outlook and give it a shot.

    Let us know :)

    Qs
     
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  10. craigie

    craigie Terabyte Poster

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    Does the issue occour if the User is on another PC?

    What Proxy Server are you using? ISA etc?
     
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  11. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    That was eliminated with the brand-spanking new profile.

    Just trying your suggestion now Qs :)

    Yes, their kit has been fully swapped out with another fresh profile.

    Will check on the proxy :tune
     
    Certifications: A+, N+, MCDST, 70-410, 70-411
    WIP: Modern Languages BA
  12. Arroryn
    Honorary Member

    Arroryn we're all dooooooomed

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    Hey Qs

    Kerberos/NTLM authentication was already selected.
     
    Certifications: A+, N+, MCDST, 70-410, 70-411
    WIP: Modern Languages BA
  13. Slam

    Slam Bit Poster

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    At what point is the user promted for their credentials... Before IE and Outlook are opened? While Outlook is opened and IE is closed? As soon as IE is launched?

    If its happening randomly, then I would try running a report from the proxy device (if it has the capability) to see what URL's the user account is accessing. It might be some kind of automatic update like Java or Adobe.
     
  14. Qs

    Qs Semi-Honorary Member Gold Member

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    Hmm, you do present us with the best problems eh? - still sounds like authentication settings though.

    Check your proxy for the primary method of authentication and make sure that the client has the same method.

    It'll be either Outlook or I.E on the users' PC that's causing the problem. See if you can find any inaccuracies - try comparing another users system which does work... (iirc I.E 6 default is NTLM, I.E 7 is Negotiate (Kerberos).

    Otherwise, cry.

    Qs
     
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  15. Sparky
    Highly Decorated Member Award

    Sparky Zettabyte Poster Moderator

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    Weird.

    A few Qs...

    What version of Outlook?
    Is there any toolbars in IE that might be trying to update over the tinterweb?
    Do you have the preview pane opened in Outlook, perhaps a HTML email is trying to access the web.

    If you are still having problems I would exmerge the mailbox, delete the user account and mailbox, copy a account that works (and has similar security group memberships that the user needs) , then log in and set everthing up again. Also keep the existing mailbox as an archive for now and then test.

    What proxy are you using btw?
     
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