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Enterprise Software Thread, Exchange 2010 OWA Error in Technical; Hi All, I'm having an issue with My Outlook Web App for my Exchange Server 2010. When the user visits ...
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    Exchange 2010 OWA Error

    Hi All,

    I'm having an issue with My Outlook Web App for my Exchange Server 2010.

    When the user visits OWA, they can log in, read emails, reply to emails, view calendars etc but when they try to look at the GAL (Global Address List) or click on the "To" button in a new email, they get the following error:

    "An unexpected error occurred and your request couldn't be handled."


    When you ask to see more details of the error message, you get the following:


    "Request
    Url: http://mydomain.sch.uk:80/owa/forms/...0251_913713053
    User host address: ???.???.???.???
    User: My Name
    EX Address: /o=Domain/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=MyName305
    SMTP Address: myname@mydomain.sch.uk
    OWA version: 14.2.247.5
    Mailbox server: EXCHANGE.mydomain.sch.uk

    Exception
    Exception type: System.NullReferenceException
    Exception message: Object reference not set to an instance of an object.

    Call stack
    Microsoft.Exchange.Data.Directory.SystemConfigurat ion.AddressBookBase.GetAllRoomsAddressList(ClientS ecurityContext clientSecurityContext, ADSystemConfigurationSession configurationSession, ADObjectId addressBookPolicyId)
    Microsoft.Exchange.Clients.Owa.Core.UserContext.ge t_AllRoomsAddressList()
    Microsoft.Exchange.Clients.Owa.Core.Directory.Dire ctoryAssistance.GetAllRoomsAddressBookInfo(UserCon text userContext)
    Microsoft.Exchange.Clients.Owa.Core.UserContext.ge t_AllRoomsAddressBookInfo()
    Microsoft.Exchange.Clients.Owa.Premium.Controls.Se condaryNavigationDirectoryList.CreateCondensedDire ctoryList(UserContext userContext, Boolean isRoomPicker)
    Microsoft.Exchange.Clients.Owa.Premium.DirectoryVi ew.RenderSecondaryNavigation(TextWriter output, UserContext userContext, Boolean isRoomPicker)
    Microsoft.Exchange.Clients.Owa.Premium.Controls.Na vigationHost.RenderSecondaryNavigation(TextWriter output, Boolean showContacts)
    ASP.forms_premium_addressbook_aspx.__Render__contr ol1(HtmlTextWriter __w, Control parameterContainer)
    System.Web.UI.Control.RenderChildrenInternal(HtmlT extWriter writer, ICollection children)
    System.Web.UI.Page.Render(HtmlTextWriter writer)
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)"


    If anyone could help me or shed some light on the issue I'd really appreciate it as I'm stuck.

    Many Thanks

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    Just an update to this:

    I tried logging in using the "Light' version of OWA (designed for low bandwidth users), attempting to open the Address Book and this works fine, so it's only using the standard version of OWA.

    Not sure if this makes any difference to the solution to this issue.

    If someone could help that would be great.

    Thanks
    Last edited by bmtt; 14th August 2013 at 06:45 PM.

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    Hi Everyone,

    I'm still having this issue and was curious if anyone had any ideas.

    Many Thanks.

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    Is this when accessing webmail internal or externally? What SP and RU version are you on? Does your OAB work ok when running Outlook 2010 in NON cached mode?

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    OWA addressbook error

    Looks like your error - solution is ADSIEdit of msExchResourceAddressList - which you can always put back if necessary.

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    Check your AutoDiscover is configured correctly

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    RobBaxter's Avatar
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    https://testconnectivity.microsoft.com/ is your friend.

    I spent 1 hour and this website until EVERYTHING ticked Green.

    I fixed like a boat load of errors.

    If it still doesn't work after that, i do have some other tricks up my sleeve. Let me know after you have made sure everything is setup right.

    Also FYI, School Agreement applicable. Goto 2012 ASAP, from a "external / internal" standpoint i think personally it's far better. Also, Since Office 365 is soon to be covered by said agreement (for the level up from free to education), I am giving serious thoughts to implementing a hybrid "On Site / Cloud" infer-structure for this.

    Anyways ... thats a little derail of you topic. Appologies! Let me know if you fixed after you run through this trouble shooter. If it's still broken I know some places to look.

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    Many thanks, problem solved! Thanks for all your help, greatly appreciated.

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