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Dan2000's avatar
Dan2000
Copper Contributor
Aug 13, 2020

Problem with the MsJet40.dll released with the Windows 10 KB4566782 Update

Hello,   We have a problem with the new MsJet40.dll version 4.0.9801.25 released with the Windows 10 KB4566782 Update   All "replicated' MDB database can't be open anymore with an error message :...
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davidgmjacobson's avatar
davidgmjacobson
Copper Contributor
Aug 18, 2020

Hi Dan2000 

 

I have the same problem, but for me it came in the KB4565351 cumulative update.

 

Replacing the dll is easier and less dangerous than uninstalling the update (and pausing updates, so that Windows doesn't immediately reinstall it), which is what I did.

 

Keep well,

David

PatrickLee2195's avatar
PatrickLee2195
Copper Contributor
Aug 19, 2020
I exactly same problem with you after udpated KB4565351.

I got many complaints from my users due to MSjet40.dll issue.

Error Message:
Unable to open database 'MSysAccessObjects'. It may not be a database that your application recognizes, or the file may be damaged "

I restored manually from the MSjet40.dll 4.0.9801.25 to MSjet40.dll 4.0.9801.24 then my MS Access 2003 program resumed normal.


  • Dan2000's avatar
    Dan2000
    Copper Contributor
    Aug 19, 2020

    PatrickLee2195 Maybe you can post here the latest working version here of the dll?

    • PatrickLee2195's avatar
      PatrickLee2195
      Copper Contributor
      Aug 20, 2020

      Dan2000 

       

      MSjet40.dll 4.0.9801.25 did not work after udpated KB4565351

       

      Latest working dll is MSjet40.dll 4.0.9801.24.

      • Dan2000's avatar
        Dan2000
        Copper Contributor
        Aug 20, 2020

        PatrickLee2195 Yes can you post it here? as I don't have found it 

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