Repair Corrupted MS Access

Easily Recover Corrupted and Damaged Access Database Files (.accdb, .mdb)

MS Access is basically a pseudo-relational database engine from Microsoft. It is a part of MS Office suite application that includes the Microsoft Outlook, Word, Excel, and many more. MS Access is basically a Jet Database Engine for storing the data. The MS Access database consists of objects, macros, tables, queries, modules, and forms. Using the database of MS Access, the users can easily perform functions on data. A user can easily add, view, edit, share, delete, and organize the data stored in the database. It can be even considered as a stand-alone product. It has an easy Graphical user interface, and is easily operable with the applications and platforms like SQL server database engine and Visual Basic for Application. The version of MS Access below 2007 creates files with .mdb extension and the new editions make use of .accdb file format.

Different File Formats of Microsoft Access

MS Access works on two file extensions:

  • .mdb
  • .accdb

Before the introduction of .accdb files in Access 2007, file format used was .mdb. There are many editions of MDB file extension. Users can still access the .mdb files as they are operable on Access 2003, 2002, 2000. But, the users are restricted to take the advantages of .accdb files. In contrary to it, there are few features that can be accessed by only MDB files. All the features of MDB file extensions that are not present in ACCDB files are jotted below:

  • It provides Mixed Version Environment. It means that the ACCDB file extension cannot be opened or linked to the earlier versions of the MS Access below 2007. If an employee of an organization who comprises of earlier MS Access version he/she must opt for the MDB file extension. As, the MDB files would be of use in such case. Users can even use Access or Web Database in web browser irrespective of the fact whether MS Access is pre-installed in the system or not.
  • The Database Replication is also supported by Microsoft Access MDB files. But it is totally dissimilar to the ACCDB files in Access arena. If MS Access uses the Replication feature, users need to recreate solution to use ACCDB files.
  • Provides User Level Security while working in MS Access Arena. The ACCDB file does not support the user-level security feature. This feature provides the users with a way to help in what they want to see. The user level security is not effective in the data security. The security method has been eliminated and can easily compromised. In many cases, the user-level security improves the usability as it keeps things simple for the users. In case, a user has no business reason to make use of a particular form, then the users can hide the form. If a user needs an Access solution that is dependent on the user-level security to improve the usability then they can make use of the .mdb files without any hassle.

ACCDB file format is MS Access is starting from Access 2007. The .accdb file format supports a lot of newer features like attachments and calculated fields. In many circumstances, the ACCDB file format is considered as the right choice because of the efficient features:

All of the features of .accdb files are jotted below:

  • Applications and Web databases using the Access Services: By giving the proper server resource, users can publish an ACCDB file to Web irrespective of some compatibility restrictions. The write-up provides the users with two ways through which it can be performed.
  1. Access Database
  2. Web Database

The Access Applications are newer form of the database. This app runs entirely in cloud. MS Access itself serves as a designing tool for many applications. Many applications take the advantage of a latest SQL Server and the SharePoint technology. The Web database released in Access in 2010 version though it served much similar functionality but does not support the SQL Server. After publishing an application or a web database, the database is always present on the Server. Users can easily open the database as an .accdb file for making changes in design. The web database or application runs on browser without the Access.

  • The Multivalued field is a lookup field that makes the users stores more than a single value per record. For instance, if a user wants to assign many users a task, it can be done in ACCDB file as users can create a multi-valued field to store the name of employees that have been assigned the task. Users can even select the value from the table and list of the values. The Multi-valued fields makes easy for the users to select and store more than one choice without using create more advance database design. The Multi-valued fields are important for the process of integration with SharePoint as SharePoint list even supports the multi-valued fields.
  • The Attachment Data Type enables the users to easily store the documents and the binary files in the database keeping the file under the size of 2 GB. The attachments present are automatically compressed. The record possesses multiple attachments but addition of only one field per table is required.
  • The ACCDB files have a great Interaction with the SharePoint and MS Outlook. As these files easily supports the security requirements that an .mdb file does not support.
  • The .accdb files provide users with the improved encryption. Users can even select a set of a database password and encrypt the contents of the database. The MS Access ACCDB files use Windows Crypto API by default to encrypt data.

How to Convert MDB file to ACCDB Format?

To convert Access .mdb file to .accdb format, firstly open the file and save it as ACCDB.

Note: The following method serves for the .mdb files that are created in Access 2003, Access 2002, Access 2000, and Access 1997.

Mentioned are steps through which the Access file conversion can be done:

  • Open the database first.
  • Click on Open on the left side.
  • Select and open database to be converted in open dialog box.
  • Then opt for convert the database.
  • Afterwards click on the File tab.
  • Click Save As option present on the left side.
  • Click save database as option present in Access Database under the Database File type.
  • Under the database file type, click on Access database present on Right side under the database file types.
  • In Save as dialog box, enter the file name and use file name supplied in the File name box.
  • Finally click on save option which will save a copy of the database created in ACCDB file format.

Microsoft Access Database Corruption Reasons

In case there occurs an error in the binary file of database, in such cases, database corruption happens. In such cases, the users face a random error or haves a difficulty in using database. Jet Database Engine in Access auto-fixes many minor issues that amalgamates in the database time and again while reading or writing the data. In these cases, users will never come across anything happened wrong but it has two aspects right or wrong. In few cases, it is right because the work does not get interrupted and in wrong it leads to corruption of the files that is even not a good sign as it goes undetected and damages the files.

The main reasons behind corruption of Access data files are:

Frequently editing of data in Memo Field makes it more prone to the corruption in Access database. Many a times, the results of a problem with a VBA module and is not a prior risk to the data loss. It does not pose damage to the design of database.

If Virus infects the files that is required by the MS Access database, till the time those files are accessed in the database, the infection is spread to database and it is corrupted.

Many times, hardware failure like the lost packets on the network card and bad sectors in hard drive causes corruption.

Sometimes, users come across the improperly designed or the third-party plug-in for MS Access also corrupts the database.

Sometimes, the interrupted changes to the data because of service loss in network causes Access to mark database file as damaged. Though it can be repaired but many files would go missing once the Access repair process is complete.

While using many databases having different Jet Service Packs, and the updates installed, then the minor difference in .mdb file and file-locking phenomenon causes the access database corruption.

It happens in few cases, but sometimes the improper shutdown of a machine also leads to the corruption or damage in database files.

Many a times the bugs present in MS Access and the Jet Software are the main reasons of corruption.

5 Steps of Repairing Corrupted Microsoft Access Database

The LDB files are basically the lock Information files. It is generated automatically at the time Access database have been generated by the users. These files are created using the same name as that of Access Database but via .ldb extension. These files often generate confusion among users as both of the main files and LDB files are generated together. So, the deletion becomes necessary because sometimes excessive LDB files can even lead to MS Access database corruption.

Sometimes, corruption even occurs due to the excessive files in MS Access. Then users should create a new file and export the data from the corrupted databases. Mentioned below are few points through which the users can easily perform the same.

  • Firstly, start MS Access and select the blank database present in MS Access and opt for OK button.
  • Name the new database and select a file location and use the Create option.
  • Tap the file menu and switch to external data and opt for Import.
  • Find out the select corrupted database and click on import.
  • If a user does not receive the Object Window showing Import then the process can’t be recovered to the Access Database.
  • Select on Tables present on top of the Import objects Windows, and opt for select all. Repeat the tabs present on the screen and hit on OK button in case the process is done.

The Jet Compact Software i.e., JETCOMP.exe is basically treated as a Stand-alone utility that is associated with the MS jet database Engine 3.x and 4.x. The program can be run in conjunction with the MS jet database engine 3.x & 4.x in case of recovering the corrupt databases. Users can even run the MS Access Compact software for repairing the corrupted Access databases. The Jetcomp.exe is capable of recovering the databases that simple programs cannot perform. The basic cause of this is that the tool is capable of open and closing a database before compacting it. In many of the cases, the utilities are able to reopen databases. The Compact option is unable to go to next level as it is preventing the restoration of database. Jetcomp.exe does not open and close the database before the process of compacting. Henceforth, it is able to recover the database that other software cannot perform.

Before the users continue with the Compact and repair built-in tool, they should jot down the following necessary instructions:

  • Always make a backup of the files.
  • Compact and Repair the databases automatically.
  • Note down the System recovery error table.
  • Get the access to database to make use of Compact and Repair database command.
  • Acquire the sufficient Permissions to run compact and repair function.

The inbuilt utility functions in two ways:

  1. The database that are opened by users:
  • Click on File tab>> Opt for Info>> Select Compact and Repair Database Option

Note: In this case, if the other users are using the database file, then this function cannot be performed.

  1. The database not opened by any user
  • Firstly, Start MS Access but do not try to open the database files in it
  • Point towards info>> Click Compact and Repair Database
  • In the dialog box of database to compact form, navigate and double click on the databases to be repaired

Note: In this case, if any other user is accessing the database files, then users can perform the compact and repair operation. While running the compact and repair option other users cannot access the database files.

Are you really concerned about the problem cause in MS Access? Is your MS Access database corrupted? Are your important files in the corrupted database? Do you want to repair corrupt Access database file? Tried all the methods still puzzled? No need to Worry, Switch to our MS Access database recovery software. The tool is so robust that it recovers all damaged databases present in MS Access. So, go through the steps: It repair corrupt Microsoft Access database files (both .mdb and .accdb). It also repairs and restores the tables, queries, reports forms, macros, etc. It also recover the permanently deleted data from both the database files. It has the potential to export as well as save the healthy databases. The tool recover corrupt MDB file due to over size. MS Access all versions should be pre-installed on the system. The tool is easily operable on all the Windows Operating Systems.

Microsoft Access Repair Utility Download

Working Of Microsoft Access File Repair Tool

  • Firstly download and install the Access recovery software. Start the software and browse the corrupted database files from the location present on drive.


  • Opt for the Recover button and begin the process of repairing Access database file. Once opted for the Recover Button, the software begins the process.


  • Afterwards, click on Export option and import the files previewed on the screen.


  • Once the entire process till up completes, just navigate to select location on the system where saved files are kept. The software renders with two options:
  1. Export as MS Access Database.
  2. CSV file: This makes the files exported to CSV and afterwards can easily be convert the ACCDB files to XLS.


  • Users can even select a particular destination of the desired files like MDB and ACCDB. The utility provides two options for this:
  1. Store As Schema
  2. Store both Schema and Data

Afterwards, the software generates the records and user can easily opt for Export/save option and then close application.