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  1. #1
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    Greetings,

    I've used Outlook for many years. I've used Outlook 2007 longer than a year without major problems, but as of a couple of weeks ago it crashes intermittently when I am composing a reply to a message. Also Outlook Send/Receive hangs around on the task bar after it has finished processing. Outlook 2007 crashes with "Unhandled exception at 0x0aa0542a in OUTLOOK.EXE: 0xC000001D: Illegal Instruction." When I go into debug mode in Visual Studio 2008 the debugger indicates it is in the threadex.c module. I suspect, therefore, a bug in the threading module.

    The only thing that's changed on my 64-bit Vista machine is latest Microsoft maintenance and and update to LastPass. Has anyone experienced the same or similar problem? If so, is there a solution?

    Thanks!

  2. #2
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    Often problems like this are caused by Outlook addins.

    Have you tried running Outlook with addins disabled?

    Joe

    Joe

  3. #3
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    Hi SamStamport,

    Just to add to what Joe said already. Please have a look at these links,

    Work with Office safe modes

    Do you have any nonessential add-ins or out-of-date add-ins that are installed in Outlook?

    How to troubleshoot performance issues in Outlook 2007

    Let us know how you go

  4. #4
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    I think I finally found the problem.

    Adaware had placed an addin into Outlook 2007. I removed it a few days ago and Outlook has been running fine since that time.

    I hate it when the installer for a program, in this case Adaware, does not notify you during the install process that it is modifying other programs!

  5. #5
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    Quote Originally Posted by SamStamport View Post
    I think I finally found the problem.

    Adaware had placed an addin into Outlook 2007. I removed it a few days ago and Outlook has been running fine since that time.
    Anti-malware addins have long been a problem area for Outlook. Glad you got it resolved. Thanks for posting back.

    Joe
    Joe

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