Outlook 2010 wwlib.dll error when opening certain emails, open fine with plain text, please help!


  • I have a machine with XP and Office 2010.  When using Outlook 2010, some emails will not open in normal or safe mode.  Outlook crashes with the following error information: Appname: outlook.exe, App Ver: 14.0.4760.1000, AppStamp: 4ba8fefd, Mod Name: wwlib.dll ModVer: 14.0.5123.5000 Mod Stamp: 4c646c1f

    Also the same email will not open from the PST under a different user profile and email profile.  It does however open fine if Outlook is setup to open emails as plain text.

    I suspect the issue is more related to Word but I can't figure it out.

    Tuesday, November 02, 2010 5:32 PM


  • Uninstall and reinstalled of Office fixed the issue. It's possible that a 3rd party PDF program might have caused the issue.

    • Marked as answer by Truwarrior Wednesday, March 23, 2011 4:21 PM
    Wednesday, March 23, 2011 4:21 PM

All replies

  • Furthermore, the user thinks the issue started happening after installing Primo PDF Professional, but uninstalling the product didn't resolve the issue.
    Tuesday, November 02, 2010 6:00 PM
  • Hi,


    Try a start Outlook in safe mode and test the results again.

    Click Start, point to All Programs, and then point to Microsoft Office. Press and hold the CTRL key, and then click Microsoft Outlook.


    If the problem does not occur in the safe mode, this issue might be related to some third-party add-ins in the Office program, we can try to disable them.


    If the problem persists in safe mode, try a new Outlook profile


    1.       Exit Outlook.

    2.       Go to Start > Control Panel, click or double-click Mail.

    3.       Click Show Profiles. Choose Prompt for a profile to be used.

    4.       Click Add.

    5.       Type a name for the profile, and then click OK.

    6.       Highlight the profile, and choose Properties. Then Email Accounts.., add your email account in the profile.

    7.       Start Outlook, and choose this new profile.


    Wednesday, November 03, 2010 2:38 AM
  • I mentioned above I tried this and it still doesn't work.  Any other ideas?  I suspect a font but I don't see anything obvious...
    Wednesday, November 03, 2010 4:31 PM
  • Kind of an old post but I thought I'd respond, for future searchers: I had a similar issue (kept getting the above error and a new account and reinstalling Outlook didn't help) and it was fixed by a Scandisk.

    Monday, December 20, 2010 6:18 PM
  • Uninstall and reinstalled of Office fixed the issue. It's possible that a 3rd party PDF program might have caused the issue.

    • Marked as answer by Truwarrior Wednesday, March 23, 2011 4:21 PM
    Wednesday, March 23, 2011 4:21 PM
  • Hi all.  I have had this issue with Outlook 2010 in particular & spent much of the day systematically removing software & re-installing Office 2010 (Professional) on my Windows 7 64 bit system.  Luckily, I could select a number of emails to continually re-produce the issue until it was resolved. (Also luckily, I could find other productive things to do while I resolved this on my setup).

    The end result for me, was that my email signature was creating the problem with the WWLIB.DLL file.

    I removed my email signature & created one from scratch & tested with numerous emails that were known to re-create the problem & have not had one single failure since.

    My email signature had been created on Word 2003 & I copied & pasted the layout to the signature creator in Outlook 2010.  I remember lots of quirks with making signatures in Outlook 2003 & earlier & I've had corrupt signature issues before. (I wish I'd thought of it earlier).

    Interestingly, while the issue was still evident, Outlook would not retain the email address that I was forwarding to for testing, even when I chose an email that worked.  However, since I've replaced the email signature, the address automatically shows in the "to"options when I start typing. (wasn't that the "atend" file or similar on XP?).

    Other faults during the time that the WWLIB.DLL issue was happening were that the email would sometimes go in the drafts folder, but mostly not, also the computer would slow when Outlook was running & Internet Explorer 9 would take up to 20 seconds to find a link from an email or a fresh web page even when started independently.

    I hope the above helps someone else with the WWLIB.DLL file, as I found it very challenging & was about to re-install to "virtual" XP Mode.


    • Proposed as answer by Doddsy1000 Tuesday, April 12, 2011 8:05 AM
    Tuesday, April 12, 2011 8:05 AM
  • I'm having the same problem unfortunately. I've deleted all the signature (just one actually) but Outlook 2010 still crashes like crazy on every copy-n-paste attempt:

    Problem signature:

    Problem Event Name: APPCRASH

    Application Name: OUTLOOK.EXE

    Application Version: 14.0.4760.1000

    Application Timestamp: 4ba8fefd

    Fault Module Name: wwlib.dll

    Fault Module Version: 14.0.5123.5000

    Fault Module Timestamp: 4c646c1f

    Exception Code: c0000005

    Exception Offset: 0028bc79

    OS Version: 6.1.7600.

    Locale ID: 1049

    Additional information about the problem:

    LCID: 1033

    skulcid: 1033

    -- Eugene
    Tuesday, April 12, 2011 2:20 PM
  • Hi everybody,

    I currently encounter a problem like this, opening a mail with a file .rtf in attachment is planting Outlook, and restart the program, here is what the Event Viewer logs :


    Nom du journal :Application

    Source :       Application Error

    Date :         31/05/2011 15:51:40

    ID de l’événement :1000

    Catégorie de la tâche :(100)

    Niveau :       Erreur

    Mots clés :    Classique

    Utilisateur :  N/A

    Ordinateur :   mycomputer.mydomain

    Description :

    Nom de l’application défaillante OUTLOOK.EXE, version : 14.0.4760.1000, horodatage : 0x4ba8fefd

    Nom du module défaillant : wwlib.dll, version : 14.0.4762.1000, horodatage : 0x4bae2623

    Code d’exception : 0xc00000fd

    Décalage d’erreur : 0x0002ce0f

    ID du processus défaillant : 0x14e4

    Heure de début de l’application défaillante : 0x01cc1f99d3b8f044

    Chemin d’accès de l’application défaillante : C:\Program Files\Microsoft Office\Office14\OUTLOOK.EXE

    Chemin d’accès du module défaillant: C:\Program Files\Microsoft Office\Office14\wwlib.dll

    ID de rapport : 1be26273-8b8d-11e0-9f05-bc305bb36a68

    XML de l’événement :

    <Event xmlns="">


        <Provider Name="Application Error" />

        <EventID Qualifiers="0">1000</EventID>




        <TimeCreated SystemTime="2011-05-31T13:51:40.000000000Z" />




        <Security />













        <Data>C:\Program Files\Microsoft Office\Office14\OUTLOOK.EXE</Data>

        <Data>C:\Program Files\Microsoft Office\Office14\wwlib.dll</Data>





    Thanks for your help.

    Tuesday, May 31, 2011 8:13 PM
  • Thanks man - this was the perfect fit for us - indebted.

    Monday, September 03, 2012 7:12 PM