“Unexpected error from external database driver (1).” after applying October security updates RRS feed

  • Question

  • Hi 

    After the kb4041678 update, we got many reports from our customers about the exceptions “Unexpected error from external database driver (1)". So we updated our software with .xlsx and then we recommended users to use Microsoft.ACE.OLEDB.12.0 or Microsoft.ACE.OLEDB.16.0. (based on 
    But the issue is still reported until now. 

    According to the KB4048957(, it might be fixed. 

    So I'd like to know whether this issue can be fixed if we change back our .xlsx file to .xls. because we have only 10 laptops to test. 

    Thank you. 

    Daniel .


    Thursday, January 24, 2019 2:42 PM

All replies

  • Hi Daniel,

    Is the following article helpful?
    “Unexpected error from external database driver (1). (Microsoft JET Database Engine)” after applying October security updates. 


    Ashidacchi -- (blog) ------

    Friday, January 25, 2019 4:28 AM
  • Hello Ashidacchi, 

    Thanks for comments. 

    I read the link before writing this question. 

    According to the best solution on the link is "Microsoft is working on a resolution and will provide an update in an upcoming release of the security patch." And I believe KB4048957 and KB4052231 was the security patch which was supposed to be released. 

    If the patch KB4048957 and KB4052231 support JET and OLEDB both, we can go back to <g class="gr_ gr_82 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar only-ins doubleReplace replaceWithoutSep" data-gr-id="82" id="82">.xls</g> file format. Right?


    Daniel Jeong

    Monday, January 28, 2019 1:30 PM
  • Hi Daniel,

    Please refer to Microsoft Update Catalog about KB4048957 and KB4052231.

    cf. KB4048957 is a Monthly Rollup for Windows 7
        KB4052231 is a Culmlative Update for Windows 10

    If your platform is Windows 7, I'm afraid 
    KB4052231 is not needed.


    Ashidacchi --

    Tuesday, January 29, 2019 3:44 AM