5 Fixes To Resolve Access Error 3049 – Cannot Open Database

Trying to access your MS Access Database but each time when you try to do so, the application throws the following error “Cannot Open Database. It may not be a database that your application recognizes or the file may be corrupt“?

Access database error 3049- cannot open database generally occurs meanwhile trying to open .mdb file or when you are trying to add new data in your database.

Well if you too encountering the same error in your Access Database then just follow down the fixes mentioned in this blog.

What’s This Access Error 3049 Is?

While using the MS Access you may get suggestions from access itself to compact Access database. Due to some unusual or unwanted reason when access interrupts the compaction procedure then you will find yourself unable to access data from MDB or ACCDB files. In such cases, you have left with only one solution i.e to repair damaged Access database via professional solution. In real-time Access database compress failure, so you will get an error.

“Run-time Error ‘3049’

Cannot Open Database It may not be a database that your application recognizes, or the file may be corrupt. “

runtime error 3049

What Happens After Error In Access Files?

The error itself reflects that the Access database compress operations are stopped due to some unknown reasons and you are left with inaccessible databases. The reason can be a virus attack, improper Access usage, hardware issues, or others. 

Let’s deeply discuss..! What are the other possible reasons behind this MS Access database error 3049?

Reasons Behind Access Database Error 3049:

If you will read the error you will find two main causes behind this cannot open database – 3049 error.

  • You are trying to open another database like dBASE, SQL database that is not linked to the existing Microsoft Jet database.
  • This error occurs when your MDB file is corrupted.
  • One more reason that makes this error happens is the file size limit is 2 GB and if you try to add data which get exceeds with 2 GB limit.

Note: Before making any changes make sure that you have made the copy of the corrupted MDB file while Access isn’t running without overwriting the earlier backups.

How To Fix Access Runtime Error 3049 Manually?

Try out the below-mentioned solutions to fix can’t open Access Database 3049 error:

1# Make Use Of Compact & Repair Utility

2# Run the Windows System File Checker Utility

3# Windows System Restore

4# Convert MS Access MDB to ACCDB

5# Professional Recommended Solution: To Fix Cannot Open Access Database 3049 error

Now it’s time to do a detailed discussion about each method. So, let’s start…!

Method 1: Make Use Of Compact & Repair Utility


  • Try to use the built-in compact & repair utility: Tools | Database Utilities | Compact/Repair. This works in every case it even helps in reducing the file size slightly and works well with a corrupted database and users might get rid of the corrupted database.
  • Once the compact and repair processes are completed you won’t receive this error message.
  • But if the database cannot be repaired via the compact & repair utility then just restore the access database from a backup copy or simply create a new database.

Compact & Repair utility helps the user to get back the healthy database. You should run compact & repair utility on a regular basis to prevent your database from can’t open database error.

Method 2: Run the Windows System File Checker Utility

It’s an inbuilt window utility tool to scan and resolve any corruption issue that occurred in the system file. Here are the steps to run System File Checker Utility, so just follow it as it is mentioned.

  • Go to the start menu and tap to the mouse right button.

Repair Access Database From Command Line

  • From the menu item make a selection for the Command Prompt (Admin). This will open the CMD panel.

Microsoft access problem after upgrading Windows 10

  • In the panel type sfc/scannow and press the Enter key.


  • After this, you will see scanning of complete system file along with the MS Access error 3049 causing files, get started.
  • After scanning you will only need to follow the instructions.

Method 3: Windows System Restore

Sometimes system restore can also fix this kind of Access Macro error 3049. So, just give it a try. Follow the steps mentioned here to run Windows System Restore.

  • Login to System in Admin Mode.
  • Hit the Start >>All Programs >>Accessories>>System Tools.

system restore

  • In System, Tools click on System Restore.

system restore 3

  • This will open the prompt box in a new window. From which you have to select “Restore my computer to an earlier time” and then hit the Next option.

system restore 1

  • After completion of the restoring process, give a restart to your system.

Method 4: Convert MS Access MDB to ACCDB

To overcome the issue of “Can’t Open Access Database” Error, export the MDB file to the ACCDB format, making use of the manual procedure discussed in this segment.  Actually this procedure will help you in viewing the incorporate content. To start the process, it’s important to close all programs and files related to MS Access.

These steps are applicable for Access 2007 and its above versions. So let’s get started with the steps to convert MDB to ACCDB.

  • Start your Access Application on your PC.
  • After then tap to the File tab and click on Open.
  • Now from the opened dialog box, choose the Access MDB file which you need to export to accdb file format.

Convert  ADP File To ACCDB Format

  • After then, tap to the File tab and select the Save & Publish.
  • From the Database File Types hit to the Access Database (*.accdb).
  • To save database file type settings tap to the Save As.

Convert MDB To ACCDB

After clicking to the Save As an option, the application asks you to close all MS access objects if any of them is already opened. To close the objects, tap to Yes or alternatively click on NO to cancel the whole conversion process.  If you have done any changes then access will ask you for saving the changes.

  • In the file name field, assign a name to the exported file and tap to the Save.

 After completing all these steps, you will see a copy of the database is gets created. Moreover, the original database will automatically get closed.

Professional Recommended Solution: To Fix Cannot Open Access Database 3049 error

No need to worry if the above steps fail to fix the issue you got another way to fix Cannot Open Database. Access Repair & Recovery tool is a professional tool that can easily fix the issue and let you recovers your data from any sort of corruption or damaged issue. It can easily restore corrupt tables, indexes, queries, and relations. Password protected forms or modules can also be retrieved.


Steps To Fix Access Macro Error 3049

The Bottom Line:

As you all know access database application is one of the widely used applications for many business organizations. Thus even a single issue can make great trouble. Like such commonly encountered issue, one of the very common error is “Can’t Open Access Database File” Error.

So, after knowing the reason behind Cannot Open Database error, you just need to try the manual fixes mentioned in this post. If it won’t work, then approach the software solution.

tip Still having issues? Fix them with this Access repair tool:

This software repairs & restores all ACCDB/MDB objects including tables, reports, queries, records, forms, and indexes along with modules, macros, and other stuffs effectively.

  1. Download Stellar Repair for Access rated Great on Cnet (download starts on this page).
  2. Click Browse and Search option to locate corrupt Access database.
  3. Click Repair button to repair & preview the database objects.

Pearson Willey is a website content writer and long-form content planner. Besides this, he is also an avid reader. Thus he knows very well how to write an engaging content for readers. Writing is like a growing edge for him. He loves exploring his knowledge on MS Access & sharing tech blogs.