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Thread: problems with msjtes40.dll on win11

  1. #1

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    problems with msjtes40.dll on win11

    in my VB6 app, i use VB6 PDW for installation. no problems over the years. recently however some users are getting error on PDW installation regarding "error occured while registering msjtes40.dll". i understand that this is because win11 has now deprecated this file and replaced with ACE db access engine. my limited development is done on winxp machine, so i can't install ACE as included with PDW?

    i would prefer not to modify PDW routine.

    what is the easiest way for me to ensure that my DAO3.6 program will run on my users new win11 machines?
    /Jimboat

  2. #2
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    Re: problems with msjtes40.dll on win11

    This file is already installed by Windows, you don't have to include it with the installer. And you can't replace it because it is protected.

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Eduardo- View Post
    This file is already installed by Windows, you don't have to include it with the installer. And you can't replace it because it is protected.
    Thx for reply - OK, that makes it easier if it is installed with all win11 set ups. It was my understanding that the DAO access engine files (ACE) were only installed if the user had installed “MS Office”. if the required ACE files are always installed by windows, then I should not have to worry?
    /Jimboat

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Jimboat View Post
    Thx for reply - OK, that makes it easier if it is installed with all win11 set ups. It was my understanding that the DAO access engine files (ACE) were only installed if the user had installed “MS Office”. if the required ACE files are always installed by windows, then I should not have to worry?
    The DAO that uses VB6 (normally ) is not ACE but uses the Jet engine 4.0.
    The DAO version is 3.6

    This one is the one that comes installed by Windows.

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Eduardo- View Post
    The DAO that uses VB6 (normally ) is not ACE but uses the Jet engine 4.0.
    The DAO version is 3.6. This one is the one that comes installed by Windows.
    Thx Eduardo. So, can I just remove the “msjtes40.dll” file from my PDW list?
    Last edited by Jimboat; Oct 18th, 2025 at 04:36 PM.
    /Jimboat

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Eduardo- View Post
    .... And you can't replace it because it is protected.
    Challenge accepted.

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by fafalone View Post
    Challenge accepted.
    It really doesn't matter. You don't need or have to replace it.

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Jimboat View Post
    Thx Eduardo. So, can I just remove the “msjtes40.dll” file from my PDW list?
    Yes. Not that can but should.

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Eduardo- View Post
    Yes. Not that can but should.
    it seems that file msjtes40.dll is required with win7, but is NOT installed with default windows 7 install? so don't i need to include in my PDW install list so that win7 installs will be ok?
    /Jimboat

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    Re: problems with msjtes40.dll on win11

    It is part of Windows since Windows XP.

  11. #11

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    Re: problems with msjtes40.dll on win11

    Quote Originally Posted by Eduardo- View Post
    It is part of Windows since Windows XP.
    Eduardo - thanks again for your help!
    /Jimboat

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