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Summary: In our comprehensive blog post, “How to Fix MS Access Error 3045 Easily,” you’ll discover straightforward methods to tackle this persistent database issue. We provide step-by-step guidance, enabling you to resolve Error 3045 with ease. By following our practical tips, you can quickly regain access to your database without data loss or downtime. Say goodbye to the frustration of encountering this error, and ensure your MS Access functions smoothly.

Microsoft Access is a powerful database management application within the Microsoft Office suite. It seamlessly integrates the Microsoft Jet Database Engine with an intuitive graphical user interface and a suite of software development tools. One of its standout features is its capability to establish connections between related information with remarkable ease, making it a versatile tool for organizing and analyzing data.

This versatile software is available in high-end editions that cater to the needs of professionals and businesses, offering advanced features and capabilities to handle complex database tasks effectively.

MS Access Error 3045

Microsoft Access Database is a widely utilized application, but like any other database system, it can encounter errors. When you encounter the “Access MDB Could Not Use File Already in Use” error message, and this error consistently appears when attempting to open the database, it indicates that error 3045 has impacted your Access file. This error typically occurs during runtime when accessing MDB or ACCDB files and can result in users being unable to access the data stored within them. Additionally, there is another Access database error 3151, which can affect the ODBC connection between Microsoft Access.

Effects of MS Access error 3045
  • Leads to the crash of the active program window completely.
  • Leads to the crash of your system again and again while running the same program.
  • MS-Windows will start responding slowly to the input by mouse or keyboard.
  • Causes the system to freeze for seconds
Solutions to fix MS Access Error 3045

Follow the following solutions to fix the error 3045

Solution 1- Open the file with shared mode.
  • Open MS Access. Go to the Tools and click Options.
  • Select Advanced. Now change the default open mode from Exclusive to Options
Solution 2-Using the OpenDatabase Function

When you are opening the MS Access DB file from another MS access file. You have to use the OpenDatabase function, by applying the following-

  • Set gblWS = DBEngine.Workspaces(0)
  • Set gblExtDB = gblWS.OpenDatabase(“[file name]”, False, False)
  • The first parameter is a string that represents the path and filename of your database (DB) file. This parameter specifies the location of the database file you want to work with.

    The second parameter serves as a key to resolve the problem or specify the mode in which you want to access the database. When set to False, it indicates Shared Mode, which allows multiple users to access and modify the database concurrently. When set to True, it represents Exclusive Mode, allowing only one user to access and modify the database while locking others out.

Solution 3- By changing the permission
  • Right-click on the database folder.
  • Click on Properties. Now the Properties dialog box will open.
  • Click on the ‘Sharing’ tab option and enable sharing.
  • Click the Permissions button in the dialog box. Now give the user ‘Modify’ permission.
  • Click on the OK option. Now again start the database.
Solution 4- Disable Read-only status
  • Select the database file (.mdb).
  • Right-click on the Project Folder.
  • Select Properties.
  • Now uncheck them Read-only.
  • And save changes and close the Properties window.
Solution 5- Try a Professional Solution

If you continue to encounter error 3045 even after trying the previously discussed solutions, the most highly recommended option is to utilize the reliable and guaranteed solution: the Kernel for Access Database Repair tool. This tool offers hassle-free and immediate repair for corrupt and damaged Access databases. It’s purpose-built to address any form of corruption issue that may afflict your Access Database, ensuring the integrity and functionality of your data.

This third-party tool is a widely recognized and trusted application for resolving Access database issues. The software is exceptionally adept at repairing even severely damaged MDB or ACCDB files and can effectively eliminate the Access database unrecognized format error. It meticulously restores every database object, ensuring the integrity of your data. Furthermore, it offers the flexibility to repair MDB files of any size, accommodating your specific needs.

Notably, this application facilitates the recovery of permanently deleted data from Access database files, enhancing its restorative capabilities. It extends its support to all versions of MS Access, making it a versatile solution for users across different environments. Its user-friendly interface makes it straightforward to use, ensuring that you can efficiently address database issues without unnecessary complications.


Managing a database can indeed be a challenging task, especially when persistent errors like 3045 continually corrupt the database. The consequences of a damaged or corrupted database can be detrimental, causing users to lose access to their vital data. In such situations, it’s strongly advised to consider professional solutions to address these errors effectively.

Kernel for Access Database Repair stands out as a reliable solution that simplifies the process of Access database recovery. This blog aims to provide you with valuable insights and practical ways to resolve the stubborn error 3045. By exploring professional tools like Kernel for Access Database Repair, you can regain control over your database and ensure the integrity of your data.

Kernel for Access Database Repair