"Microsoft Access Database Engine 2016" corrupted after installing "KB5002521 Security Update patch"

Question

I have installed "KB5002521 Security Update patch" for "Microsoft Access Database Engine 2016" and after that If I invoke the OLEDB API (OleDbConnection.open()) to access "Microsoft Access Database Engine 2016" throws error to access ".mdb" files .

Any assistance is greatly appreciated.

Answer 1

Hi Ryan Lv MSFT , Thank you so much for your assistance

Answer 2

Hi Sivanesan_398,

I have reporting the issue to the team via Access in-app feedback. Hopefully they can see the feedback and prepare the fix for the issue.

Best Regards,
Ryan

Answer 3

Hi Ryan Lv MSFT,

since I am not able report problem in developers forum (I don't get any link where we need to provide feedback or report this problem). i request you to forward this to the concerned team

Answer 4

Hi Ryan Lv MSFT,

Yes I have uninstalled KB5002521 and verified that the functionality is working fine. To reproduce this issue on your side please follow the below steps,

1. Install "Microsoft Access database engine 2016" (If it installed already in your system , uninstall it and install again)
2. Update "kb5002521" patch in your system. (I have updated with mso2016-kb5002521-fullfile-x64-glb.exe)
3. Write a sample source code to access "Microsoft Access database engine 2016" (C# code, I given sample code below)

using System.Data.OleDb;

OleDbConnection m_OleDbConnection;

m_OleDbConnection.CreateCommand();

m_OleDbConnection.ConnectionString = $"Provider=""Microsoft.ACE.OLEDB.16.0"; Data Source="your_mdb_filepath";

m_OleDbConnection.Open(); //exception is throwing in this line after install KB5002521 patch

@Ryan Lv MSFT, Please forward this to your concerned team

Answer 5

Hi Sivanesan_398,

I haven't seen such report in the community. Have you tried uninstall this KB5002521 to see if everything is back to normal? If so, please report to Access team via How do I give feedback on Microsoft 365? - Microsoft Support as this may be an issue introducing by this update

To uninstall a Windows update, you can refer to How to uninstall a Windows update - Microsoft Support

Best Regards,

Ryan | Microsoft Community Moderator