How to Recover and Repair Corrupted Microsoft Access Databases (MDB, ACCDB)

Recoverit Editorial Team

Oct 23, 2026 • Filed to: Recover Files • Proven solutions

TL;DR:

To restore corrupted Microsoft Access (MDB and ACCDB) databases, first utilize the native Compact and Repair utility or command-line decompilation before applying third-party solutions like Stellar Repair for broken files or Wondershare Recoverit for missing files.
    ● Running the Access executable with the "/decompile" command line switch removes corrupted compiled VBA codes, which must be done prior to executing a standard compact and repair cycle.
    ● Web-based OfficeRecovery.com and desktop-based Stellar Repair resolve internal data file corruption, whereas Wondershare Recoverit is strictly designed for retrieving deleted or completely lost database files from storage drives.
    ● Because Access databases have a strict 2-gigabyte maximum size limit, users must split the database into distinct frontend forms and backend data or upsize to SQL Server to prevent continuous file corruption.

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File corruption and data loss are something that every user is familiar with. This mishap has happened to the best of us at some point in our lives. However much of a drawback it might seem at the time, there are still effective ways using which you can recover and repair your corrupted files.

Microsoft Access is a database management and storing system which is most commonly used by developers and data architects for developing applications. Hence, when a database gets corrupted, users might feel like jumping off a clip. Here, we have compiled resourceful insight regarding corrupted MS Access databases, the reasons behind corruption, and what you can do when it happens.

Part 1: What Goes Wrong Primarily with Access Databases

The first thing to understand is what possible reasons may cause corruption of databases. It is important to remember that data corruption can be the result of various reasons and not just one, such as:

• Errors in Binary File Format: MS Access database files usually go corrupt when there are errors in the underlying binary database file format. Thus, you can face difficulty in accessing the files.
• Sudden or Forceful Exit: When unexpected or forceful closure of the application occurs while a write operation is going on, the database might get marked as suspect/corrupt.
• Hardware Problems: Faulty hardware or network failure may cause database file corruption. Bad sectors on drives and lost packets can result in crashed applications and ultimately loss of data.
• Running Database in Other Programs: When you try to run an Access database in a non-native program, it can cause data files such as MDB and ACCDB to go corrupt.
• Virus and Malware: Virus and malware attacks are one of the most common reasons for data corruption. Infection in one file can spread to others, and the entire database will go corrupt.

Part 2: What to Do When Database Gets Corrupted

Now you know what happens while data files go corrupt. Let’s now move on to ways to fix the issue effectively.

Method 1: Try the Compact and Repair Tool

MS Access offers a repair tool in itself that can be used to repair database files. To use it, follow the given instructions:

• Launch MS Access and go to the “Database Tools” tab.
• Find and select the “Compact and Repair Database” option.

• A window will open. Select the database file that you wish to repair.
• Now, click on the “Compact” button.

• Enter a new title for the file and select a location to save it, then click on the “Save” button.

Method 2: Use OfficeRecovery.com

MS files can be fixed using OfficeRecovery.com, which offers several web tools to resolve the issue, including corrupted MDB and ACCDB files. Here’s how to do that:

• Launch your browser and open “Repair Access Database”.
• Click on the “Choose File” button and select the corrupted database file.
• Now click on the “Secure Upload and Repair” button to fix your file.

Method 3: Try Stellar Repair for Access

The Stellar Repair tool can repair your corrupted MDB and ACCDB files. To do so, follow the steps given below.

• Launch the software on your computer, and in the main interface of the program, click on "Select Database." You can either browse or select your corrupted files.

• Click on the “Repair” button to initiate the process.

• You can preview the repaired files and click on "OK."

Method 4: Remove Compiled VBA Codes

You can decompile MS Access VBA codes to undo the corruption of files. Here is how you can do that by following these steps.

• Run Access with the command line: “C:\Program Files\Microsoft Office\Office\MsAccess.exe/decompile”
• After the database window is displayed and de-compilation is complete, exit MS Access and restart.
• Now, open your database, open any module and choose "Debug" and then "Compile Project Name."
• Then close the module, return to the Access window, and compact and repair the database.

Part 3: Best Remedy for Recovering Access Files

If you have lost your database and cannot find it on your system, then Wondershare Recoverit is the best tool in this regard. It enables its users to recover lost files. The program has dedicated features that enable it to stand out in the crowd. The software is user-friendly and especially beneficial to users who are not very tech-savvy.

Its interactive user interface makes it easy to use. Recoverit can retrieve almost all types of file formats and types, including images, videos, documents, emails, and in this case, MDB and ACCDB files. It can recover data from internal storage and external hard drives. The program can support large files and requires no subscription.

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After downloading and launching the program on your computer, here is how you can recover your lost files using Recoverit:

Step 1: Launch the software, Choosing a Location

The first step is to select the location from which you wish to recover your lost files. In the main interface of the software, choose a hard disk, external device, or drive.

Step 2: Initiate the Scan

Now, click on "Start" to enable the program to start the scan and look for your lost files from the selected location. Usually, this might take a minute or two or longer if the file size is large. You can also pinpoint files and put filters to narrow down the results.

Step 3: Preview and Recover Files

Once the files are all listed, you can see and choose the ones that you wish to recover. Select the desired files and click on the “Recover” button to get your files back.

Step 4: Save the Recovered Files

Finally, choose a suitable location on your computer and save your recovered files.

Part 4: Ways to Prevent Corruption of Access Databases

Although file corruption is reversible, it is still advisable to avoid the issue from occurring in the first place. There are a few simple ways by which you can protect your MDB and ACCDB files from corruption and loss. You can follow these tips to prevent your MS Access database files from getting corrupted.

• Split the Database Files: Splitting your MDB and ACCDB files into frontend and backend is a good practice to avoid database problems and file corruption.
• Avoid Leaving the Database Open: It is suggested to close MS Access when not in use to avoid product backups and file corruption.
• Exit the Application Correctly: One should always remember to close the application correctly after writing operations are done. Force quitting or unexpected closures can cause various problems, including corruption.
• Keep a Check on the Hardware: Always use good quality hardware, as a small defect in the network connections can lead to corruption.
• Defragment the Network Hard Drives: Large-sized database files in Access causes storage problems and rapid fragmentation. So, users should defragment the hard disk to increase efficiency.
• Use Compact and Repair Frequently: One should make use of the Compact and Repair utility frequently in order to prevent corruption and other problems in the database files.

Conclusion

File and data corruption can prove to be a major setback in various instances. However, the damage is not totally irreversible. Using the methods mentioned above, you can try and salvage some or most of your data from the wreck. Try these fixes to recover your corrupted data without much trouble.

In case you have lost your database or have mistakenly deleted it, then your best option is to try Wondershare Recoverit to recover your databases, which will undoubtedly prove fruitful. Now, data recovery is not hard as it used to be. Make sure to implement the tips to avoid facing such problems in the future.

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