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"Cannot start Microsoft Outlook"

Discussion in 'Microsoft Mail (Outlook / OE / Windows Mail)' started by KAL, 2007/12/16.

  1. 2007/12/16
    KAL

    KAL Inactive Thread Starter

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    Hello very nice intelligent helper people,

    I keep getting this error when I try to start Outlook: Cannot start Microsoft Outlook. Outlook requires Microsoft Outlook Express 4.01 or greater. You can install Outlook Express by running IE5Setup.exe from the IE5 folder located on your CD or through the Windows Update website. "

    My outlook express 6.0 works just fine so I would think that Outlook would also work. Outlook used to work just fine.

    I want to use Outlook in conjuction with Excel 2002 with SP3 to send out a mailer to my customers.

    Thanks for your help.
     
    Last edited: 2007/12/16
    KAL,
    #1
  2. 2007/12/16
    Zander

    Zander Geek Member Alumni

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    Are you familiar with regedit? If so, have a look at the following registry key.

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}

    In the right pane there should be a value named IsInstalled. The data value for it should be 00000001. If yours ends with a zero, double click on IsInstalled and change the zero to a 1. Then try starting Outlook.

    If you aren't comfortable editing the registry, you can copy and paste the contents of the code box below into notepad. Save the file as outlook.reg. If notepad saves the file as a .txt file anyway, change the name of the file so it has a .reg extension instead of .txt after you close notepad. Then double click the file, and choose yes when prompted to enter it into the registry.

    Code:
    Windows Registry Editor Version 5.00
    
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}]
     "IsInstalled "=dword:00000001
     

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  4. 2007/12/16
    KAL

    KAL Inactive Thread Starter

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    Hi Zander,
    There are two REG_DWORD--the one after Outlook Express 6 is 0x00000001 (1)

    the other is after MailNews and it is 0x00000000 (0)

    Do they both need to be the same?
     
    KAL,
    #3
  5. 2007/12/16
    Zander

    Zander Geek Member Alumni

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    Yes, the second one needs to end in a 1 also. To the left of the one I'm talking about, under the name column, it should say IsInstalled. If that one ends in zero, change it to 1.
     
  6. 2007/12/16
    KAL

    KAL Inactive Thread Starter

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    OHHHH!!! THANK YOU - THANK YOU - THANK YOU!!!

    It is simply amazing that a single number could do such a thing.

    Have a Christmas Toddy on Me!! :)
     
    KAL,
    #5
  7. 2007/12/16
    Zander

    Zander Geek Member Alumni

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    You're welcome! Glad I could help. :)
     

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