Summary: MDB files are essential to managing Microsoft Database. Occasionally, it gets corrupted for several reasons, and users cannot get access to its MDB files. This guide will help you to fix the corruption of MDB files with manual methods, as well as an automated Kernel for Access Database repair tool to retain your MDB files.

Microsoft Access Database file extensions, known as MDB files are basically managed users of Microsoft Database. MDB files store user's data, including tables, forms, queries, and reports. Many of you might have used Access Database in your organization and know about its proprietary Database Management System. Then, you might be aware of the fact that just like other files, MDB files are also prone to corruption, which can drastically affect other database files. But, how does an MDB file get corrupt if you have not moved the data here and there?

Reasons behind corruption of MDB files
  1. Interrupted change in data due to network loss. In such cases, the file can be repaired, but some of your data might be missing after it.
  2. Hardware failures are another reason behind MDB corruption.
  3. If you make frequent edits to Memo fields, the chances of Access database corruption increases.
  4. When Access Database uses a corrupted file, the infection will spread to the entire database.
  5. Due to unnecessary third-party plugins installed on your system.

Error messages when MDB gets corrupt

When your Access Database gets corrupt, you can receive the following error messages on your screen:

  • Unrecognized Database format 'filename.mdb' (Error 3343)’.
  • The database 'filename.mdb' needs to be repaired or isn't a database file (Error 2239).
  • Do you want Microsoft Office Access to attempt to repair the database?
  • The Microsoft Jet database engine could not find the object 'xxxx.' Make sure the object exists and that you spell its name and the path name correctly (Error 3011)
  • Record(s) cannot be read; no read permission on 'XXXX' (Error 3112).
  • Cannot open database 'filename.mdb.' It may not be a database that your application recognizes, or the file may be corrupt (Error 3049).
  • Invalid field data type (Error 3259).
  • Microsoft Access has detected that this database is in an inconsistent state and will attempt to recover the database. During this process, a backup copy of the database will be made, and all recovered objects will be placed in a new database. Access will then open the new database. The names of objects that were not successfully recovered will be logged in the “Recovery Errors” table (Error 9505).
  • The database cannot be opened because the VBA project contained in it cannot be read. The database can be opened only if the VBA project is first deleted. Deleting the VBA project removes all code from modules, forms, and reports. You should back up your database before attempting to open the database and delete the VBA project (Error 29081).

These are the common errors that you might encounter when your MDB files get corrupted. However, many other errors can occur when your MDB file is corrupted.

Repairing corrupt MDB files

Moving to solutions for repairing corrupt/damaged MDB files, there are not many options available. The only way to repair the Access Database is to send the database to a recovery company or call the experts to fix it. However, you can try some manual techniques if corruption is not much, such as:

  • If you have a backup, then restore the Access Database from the backup file.
  • Try to remove the .idb file that is created automatically by the Jet database engine.
  • Use the Jet Compact Utility, which is designed to remove minor corruption errors in an MDB file.
  • Try to delete the compiled VBA codes from the database.
  • You can even use the in-built utility Compact & Repair on your Windows platform.
Kernel for Access Database Repair

To repair the MDB files, Kernel has introduced a software – Kernel for Access Database Repair that is capable of repairing any access database file corruption. However, prevention is always better than cure. Thus, to prevent your database from any corruption, you can refer to How to Prevent Access Database Corruptions.

However, if you still face corruption errors with your MDB file, then use this software to repair it. So, let’s analyze the working process of this software.

  1. Click on Select File and select the corrupted MDB file. Select the corrupted MDB file
  2. The tool will repair your MDB files and preview your recovered files. preview the file and click on save
  3. Provide a destination to the repaired MDB file and click on Save. Provide a destination
  4. Once you select the destination, the software will show you the process, and finally, your file will be saved. File saved

And that’s how you can quickly repair corrupt MDB files with Kernel for Access Database Repair tool.


Microsoft Access Database is widely used for multiple purposes in an organization; thus, keeping its data safe is your responsibility. However, due to unexpected errors, the MDB files often get corrupted, which can affect the entire database. Thus, taking vital actions to recover that data is necessary. Here, we talked about the solution that can be used to repair Access Database. However, if you are not able to retain your MDB files, then use Kernel for Access Database Repair tool to repair your MDF files quickly.

Kernel for Access Database Repair Box
Kernel forAccess Database Repair

Recover MDB and ACCDB files from corrupt databases