Hello,
Do you mean the application could get data from a database on shared server but failed to updated data of it in recently days?
What has been changed in recently days? Have you update code in the application or update office?If so, I would suggest you revert your vb.net application or the office version to previous version and then do the test again.
Besides, please tell us how do you open and update the database so we could try to reproduce your issue?
Best Regards,
Terry
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