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Summary: When you face the ‘Unable to Connect to Access Database’ error, your database might be corrupted. This article addresses the common causes and 100% working solutions to fix this issue. With stepwise guidance, these solutions still need a little tech expertise. So, we have also got an efficient alternative, Kernel for Access Database Repair, that rescues you from any kind of Access Database related errors in just a few clicks.

When attempting to establish a connection with a Microsoft Access Database, users may encounter a recurring error message without a clear understanding of its origin or cause. This issue can be perplexing and frustrating, leaving users in search of answers. Below, we delve into the common factors contributing to this error.


Identifying the root cause and resolving the database connectivity issue is crucial, but it can be a challenging task. Many users grappling with this problem find themselves in a state of confusion, seeking clarity and solutions.

The ‘Unable to Connect to Access Database’ error can stem from numerous causes. In this article, we will explore the diverse reasons behind this issue and provide solutions on how to rectify the error and establish a successful connection to an Access database.

Entered incorrect Access Database password

While encountering the ‘unable to connect to Access database’ error, the root cause is not always complex. Users sometimes make simple mistakes, such as entering the wrong password, leading to the same error message. In such scenarios, resolving the issue is straightforward: re-enter the Access database password and ensure its accuracy.

Transferring data to Non-Microsoft Office applications

For seamless data transfer between Microsoft Office files and non-Microsoft Office applications, users must install the Access Database Engine utility. This utility installs essential components enabling efficient data exchange. In its absence, the system generates the same error mentioned above. Therefore, it is advisable to install the appropriate version of Access Database Engine when performing data transfers within Microsoft Office applications.

Check the Office Application architecture

Before downloading the Access Database Engine, it’s crucial to determine the architecture of your Office application, whether it’s 32-bit or 64-bit.

A mismatch between the architecture of the Office application and the Access Database Engine can also lead to the ‘unable to connect to Access database’ error.

Follow the steps given below to check Office application architecture:

  1. Open Microsoft Access 2016 or any other version.
  2. Click File > Account.
  3. Click on About Access.
  4. At top right, look for the application architecture.

Now, that you’ve checked the Office application architecture, proceed to download the specific Access Database Engine.

Note: If the architecture of your system is 32bit – x86, then installing the 64bit version of both Microsoft Office applications and Access Database Engine would create issues similar as above.

How to download Microsoft Access Database Engine 2016 Redistributable

To download the specific build of the Access Database Engine, visit the links given below:

  • For Access Database Engine 2016 Redistributable
  • For Access Database Engine 2010 Redistributable
    1. Open any Web Browser application,
    2. Copy & paste the link as per your Office application architecture, given above, and press Enter,
    3. The web page would load as below. Click on the Download button.

    1. Select the executable file by clicking on the checkbox and click Next.

Note: To download the 2010 build of Access Database Engine, copy the link from above. For older Versions of Microsoft Office applications, you can search on the web.

    1. The download will start, if not then click on the link given on the web page.
      Once the download is done, proceed to the installation part.

For most of the users who suffer from “Unable to Connect to Access Database” error, downloading & installing the Access Database Engine would solve the issue.

If you continue to experience Access database connectivity issues despite verifying the correct password and ensuring the proper installation of the Access Database Engine, explore the alternative causes outlined below and consider the recommended solutions.

Microsoft Access ODBC Driver error HY024

When attempting to connect to an Access database and selecting the specific ACCDB file, you may encounter an error message. This error is often caused by a mismatch in the architecture of the Windows Server, connection drivers, and the database itself.

When trying to access the database, from the web, it shows the following warning:

ADODB.Connection error ‘800a0e7a’
The specified provider could not be found. It may not be installed correctly.
/index.asp, line 43


  1. Downloading and installing the respective build of the Microsoft Access Database Engine on windows server will solve the issue.
  2. Check that the driver connection in ASP file is similar as below:
    {Microsoft Access Driver (*.mdb, *.accdb)}

ODBC Incorrect Database File Path Error

Below error occurs due to not using a compatible name for Access database file, when creating the DSN in ODBC administrator.


Compatible Access database file name should be in the format as below:


Correcting the Access database file name with full compatibility will sort the issue.

Note: As the error occurs when trying to connect to the Access database, make sure your internet connection is up and running. You must have a strong and stable internet connection to access the database online.

Windows Built-in Drive tool

Windows Built-in Drive tool is one of the easiest ways to fix any kind of Access Database related errors. Below you can learn to use the drive tool and troubleshoot your issues.

  • Open File Explorer, and go to this location: C:\Windows\SysWOW64
  • Look for the odbcad32.exe file and double tap on it.double tap on it
  • From DSN, choose MS Access Database within Name and tap on Add.tap on Add
  • Under the “Create New Data Source” window, choose ’Driver do Microsoft Access (*mdb), and tap on Finish.Driver do Microsoft Access
  • Under the ODBC Microsoft Access Setup section, tap on Repair.tap on Repair
  • From the Repair Database window, choose the drive followed by the folder where the corrupt MDB file is stored. Hit OK.Hit OK
  • Once the repair is successfully done, you will get a message.
  • Tap on OK and check for the error.
Microsoft Access 2016 reinstallation

In case the above manual solutions are ineffective in fixing this connection related Access database error, a quick re-installation can work for you. First, you need to uninstall the present Access application and then install it again. In case you have some valuable Access data that you do not want to risk losing, make a backup. Follow the steps given below.

  • Access Control Panel and tap on Programs and Features.
  • Look for Microsoft Access 2016. Right-click on the app and tap on Uninstall.

You will need Office 2016 or later installer package to reinstall Microsoft Access 2016 or a later version on your system. Launch the installation by double-clicking the executable setup file. Upon clicking the ‘Customize’ button, you can choose to install Microsoft Access 2016 alone instead of the entire installation package.choose to install Microsoft Access 2016

When Access Database files corrupt?

Corruption of Microsoft Access database files, whether MDB or ACCDB, is a concerning issue that poses a significant risk of data loss. While the application itself can handle minor database file corruption, the reality is that native solutions often fall short in more severe cases. In such situations, the most effective remedy for database file corruption or damage is to utilize Access database repair software.

Kernel for Access Database offers extensive compatibility with various MS Access builds and boasts a user-friendly interface, making it accessible to users without the need for advanced technical expertise.

Wrapping up

In numerous cases where users encounter Access database connectivity errors, installing the Access Database Engine resolves the issue. For more complex cases, it’s advisable to explore specific resolutions. If you are concerned about recovering data from a damaged database table in Microsoft Access, there are various methods, including utilizing Kernel for Access Database Repair, to repair corrupt Microsoft Access databases.

Kernel for Access Database Repair