Resolve QuickBooks Error 6155 0: Complete DIY Methods

Last Updated on May 1, 2026

You may become unable to open the company file to access the financial records, due to QuickBooks error 6155 0. This issue blocks you from accessing the company file in the single-user and multi-user modes.

This issue comes with a warning message, stating “Error -6155, 0 An error occurred when QuickBooks tried to access the company file.”

The reasons for QuickBooks error 6155 0 could include data or program corruption, an outdated application, installation issues, etc. To troubleshoot error code 6155 0, first identify all the reasons it occurs, then follow the experts’ instructions to fix it. This is what we are going to explore in this blog. Therefore, continue reading.

What is QuickBooks Error 6155 0?

The QuickBooks error 6155 0, as mentioned earlier, is a part of the 6000 error series and usually appears on the screen when you try to open a company file in QuickBooks. This issue appears when you try to access a company file in QuickBooks. When this error appears, you will see a warning message that states:

The QuickBooks error 6155 0 usually shows up if there is an incomplete installation of QuickBooks Desktop, and you are running the verify/rebuild data to resolve the company file.

Possible Explanations Why You Encounter the QuickBooks Error 6155 0

These are the reasons why you can’t open the company file and run into the QuickBooks error 6155 0:

• QuickBooks Desktop software installation is incomplete or corrupt
• .ND and .TLG files are damaged or corrupt
• You are running an outdated version of QuickBooks Desktop
• There is an issue with the file path or the folder storing the company file
• QuickBooks Desktop is not correctly installed
• The folder permissions aren’t set correctly. For instance, QuickBooks doesn’t have read and write permission to the folder that stores the company file.

After understanding the reasons behind this issue, you must follow the next section to learn how to troubleshoot it.

Tried and Tested Ways to Troubleshoot QuickBooks Error 6155 0

To resolve QuickBooks error 6155 0, there are a few steps one needs to take. For example, firstly, it is crucial to keep your QuickBooks updated to the latest version. Moreover, you can run the File Doctor to fix company files and network issues and open firewall ports automatically. In this section, we will guide you through these troubleshooting methods one by one.

Method 1: Update the QuickBooks Desktop Application

First, update your QuickBooks Desktop to the latest release. This means that you get the recent component on your computer with enhanced performance, which also resolves bugs and errors. For that, follow the steps below:

• Open the QuickBooks Desktop application and go to the Help menu

• From there, click on Update QuickBooks Desktop

• Next, select the Update Now option, followed by choosing the Get Updates
• Now, access the downloaded file to install the update
• Finally, restart the system after installation

After implementing the steps above, check whether the issue is resolved. However, if the issue still persists, follow the next method.

Method 2: Run QuickBooks File Doctor

Run QuickBooks File Doctor, which will quickly repair common company and network issues. This is often crucial to resolve company file errors like 6155 0. However, to do so, you need to install QuickBooks Tool Hub first. After that, follow the steps below:

• Start by opening the QuickBooks Tool Hub
• Next, move to the Company File Issues tab

• Now, choose Run QuickBooks File Doctor. This tool can take up to one minute for the file doctor to open.

Note: If you can’t open QuickBooks File Doctor, search for QuickBooks Desktop File Doc and open it manually.

• Choose the company file from the dropdown menu in QuickBooks File Doctor
• After that, choose Check your file (middle option only) and then Continue
• Enter the QuickBooks admin password and then choose Next

After that, you need to wait for the scan time to complete. It will take up to 10-15 minutes. However, even after successfully resolving the issue, the scan may say it was unsuccessful.

Method 3: Rename the .ND and .TLG Files

If you fail to open the company file, the .ND and .TLG files might be damaged. However, it is quite easy to recreate them. The steps below outline how to do so:

• Open the QuickBooks folder, the path for which is generally: C:\Users\Public\Documents\Intuit\QuickBooks\Company File
• Now, look for files with your company name but with extensions .nd and .tlg
• Right-click on each of them, add .old right after the extension without a space, and save the changes
• If asked whether you want to make the above changes, choose Yes to confirm

After you have the same for both .nd and .tlg files, launch QuickBooks Desktop and access the company file. If the error persists, move to the next method.

Method 4: Ensure QuickBooks Company File is Not Set as Read-Only

Let us check the properties of your QuickBooks company file to ensure that it is not set as read-only.

• Open the QuickBooks folder and right-click the company files you found trouble opening.
• From the list of options, choose Properties and then deselect the checkbox for Read-Only.
• Choose Apply, followed by OK.

Now, resume your QuickBooks operations to check whether the issue is resolved. However, if you are still facing the same issue, follow the next method.

Method 5: Set Up File Sharing Permissions

QuickBooks needs read and write permissions on the folder that stores the company file. Moreover, you should be signed in to Windows with admin rights, or the user you are logged in as needs read and write permissions to the company file.

If not, you will not be able to access the company file. Therefore, configure Windows file-sharing permissions. If this doesn’t help, and you are opening a company file in multi-user mode, configure the Windows and antivirus firewall.

Method 6: Restart the Workstations and Server

If you face QuickBooks error 6155 0 when opening the company file in multi-user mode, restart all the computers that have access to your company file.

Moreover, restart the server or computer hosting the company file. Finally, try accessing the company file. If the error persists, you might need to troubleshoot the multi-user mode issues in depth.

If you are in single-user mode and continue to have trouble opening the company file, start afresh with a clean installation of QuickBooks Desktop.

Method 7: Clean Install Your QuickBooks Desktop Application

Sometimes, due to the corrupted QuickBooks software. In such a case, you must clean install the QuickBooks Desktop. For that, carry out the steps below:

• Start by removing QuickBooks again
• Next, locate the Windows Start menu
• Browse for File Explorer to open it
• Locate and open the folder that holds the QuickBooks company files. This is usually the QuickBooks folder. It’s commonly in one of these locations:
  • C:\ProgramData\Intuit\QuickBooks (year)
  • C:\Users(current user)\AppData\Local\Intuit\QuickBooks (year)
  • C:\Program Files\Intuit\QuickBooks (year)
  • 64-bit version C:\Program Files (x86)\Intuit\QuickBooks (year)
• Right-tap the folder and choose Rename.
• Include the word “.old” at the end of the folder name. This prevents QuickBooks from accessing it when you reinstall
• Finally, reinstall QuickBooks Desktop

However, if you see an error when trying to rename the folder, follow the steps below:

• Start by right-clicking the Windows Task Bar, then choose Task Manager
• Navigate to the Processes tab
• Next, choose the Name column header to sort the list
• Choose the following processes and then End Process for each: QBDBMgrN.exe, QBDBMgr.exe, QBCFMonitorService.exe, QBW32.exe.
• Choose Yes if you see the message, “WARNING: Terminating a process can cause undesired results…”

After implementing the steps above, you must check whether the issue is resolved. We hope that the above-mentioned troubleshooting methods will help you resolve the QuickBooks error 6155 0.

A Quick Overview of QuickBooks Error Code 6155 0

You may go through the table below to see a condensed version of the information we have covered in this blog.

Conclusion

This was all about the QuickBooks error 6155 0 that arises when trying to access the company file. We have discussed all the potential reasons behind this issue. Moreover, we have listed the proven troubleshooting methods to help you overcome this problem. It is essential to carry out any method in the given order to avoid any further trouble. However, even after taking all the measures, if you are facing technical difficulty in resolving this issue, seeking expert help will be the best choice.

Frequently Asked Questions (FAQ’s)

Kate Churchill

Kate is a certified public accountant (CPA) with expertise in various accounting software. She is technically inclined and finds passion in helping businesses and self-employed people carry out bookkeeping, payroll, and taxation without worrying about errors. Every once in a while, Kate loves to travel to far-off places and relax in the lap of nature.