Fix: QuickBooks Error Code 6000

This QuickBooks error code is somewhat rare and it has various different names in a way that they are displayed after the number 6000. All of these variations of the same error code have something in common, and that it that is appears when the user attempts to open a company file using the tool.

Fixing this error can be done in many different ways so make sure you follow the instructions below carefully in order to take note of each individual method. Different methods require somewhat advanced approaches and that is why the instructions have been broken down into small, understandable steps.

Solution 1: Renaming the .ND and .TLG files

These extensions may sound unknown to you but these files are actually a part of your QuickBooks files. They contain the settings and configuration needed to open the company file in a multi-user environment.

When these files go corrupt, you can always expect these errors to occur but you can always rename them. This won’t make you lose your data. In fact, these files will be recreated when you use the QuickBooks Database Server Manager to rescan and when you open your company file.

  1. Navigate to the folder that contains your company file.

  1. Find the files which have the same file name as your company files but with extensions .ND and .TLG. The name of the file should look like this:
  2. Right-click on each file and select Rename. Add the word OLD at the end of each file name. An example would be similar to the one below. Note that adding the word old is not exactly necessary as long as you change the file’s name.


  1. Open QuickBooks again and try to sign in to your company file. If the same issue occurs, proceed to the solutions below.

Solution 2: Copy the QuickBooks file on Desktop

This solution is quite useful to test whether the location of the company file is the thing which is causing all of these issues. If the path to your company file gets to long or too complex, it may confuse the software and you should definitely consider changing the location of where you store your files. Having your files on Desktop will test whether it’s the location which is causing these issues.

  1. Navigate to the folder that contains your company file.
  2. Find the files which have the same file name as your company files but with the extension .QBW. Right-click on this file and select Copy.

  1. Navigate to your Desktop, right-click anywhere on it and choose the Paste option.
  2. Hold down the CTRL key while opening QuickBooks so that you are automatically redirected to the No Company Open window.
  3. Choose the Open or restore an existing company option and locate the file you have copied to the Desktop in the previous steps.

  1. Select the file and check to see if the same error still occurs with the company file. If the error disappears, consider saving your files to more simple locations such as a folder on your Desktop.

Solution 3: Using the QuickBooks Auto Data Recovery

This helpful feature has been introduced in QuickBooks 2012 and it’s currently only available in QuickBooks Pro, Premier, and Enterprise Solutions for Windows. It can support files up to 1.5 GB in size and it can help you recover your company files which may have been affected by this error. Follow the steps below in order to recover your data.

First of all, you will need to enable the option to view the file’s extension in Windows Explorer since you will need to be able to see the extensions for several files, as well as to remove them.

  1. Use the Windows Key + E key combination in order to open File Explorer. Click on the Organize option and select the View >> File name extension.
  2. Make sure this option is checked so that you are able to see the extension for each file on your computer.

Now that you have done this, it’s time to start solving the issue.

  1. Create a new folder on your Desktop and name it QBTest. Open the folder where you saved the company file. You can check where the file is located Product Information screen and No Company Open Window.

  1. Copy the corresponding .tlg file of your company file and paste it to the QBTest folder on your Desktop. The .lpg file should be named the same as your company file.
  2. Open the QuickBooksAutoDataRecovery folder. You should be able to locate it in the same location as your company file.
  3. Copy the .QBW.adr file and paste it to the QBTest Folder. You should now have a .QBW.adr and .tlg file in your QBTest folder.

  1. In your QBTest folder, right-click the .QBW.adr file and select the Rename option. Delete the .adr extension for the file’s name which should be enough.
  2. Open QuickBooks and make sure you open the company file saved in your QBTest folder. Make sure that the file is okay and that your data is there. You can also run the verify utility in order to make sure of the file’s integrity.
  3. If this copy of the company file is good, you can move the damaged company file to a different location and transfer the copy from QBTest to the original location.
  4. This solution will utilize the ADR version of both the .QBW and .TLG files. This should recover all but the last 12 hours of transactions.
  5. Finally, you can move the damaged company file to a new location and replace it with the copy which is located in the QBTest folder. Make sure the file is working correctly now.

Solution 4: Verify Folder Permissions

This error can occur even if you don’t possess the proper permissions for the folder where the company files are located. This is easy to solve so first, let’s check if that is the real issue.

  1. Right-click on the folder which contains the company file and select Properties.
  2. Navigate to the Security tab and click Advanced. Select QBDataServiceUserXX and click on Edit.
  3. Make sure that the following settings are set to Allowed:
    Traverse Folder/Execute File
    List Folder/Read Data
    Read Attributes
    Read Extended Attributes
    Create Files/Write Data
    Create Folders/Append Data
    Write Attributes
    Write Extended Attributes
    Read Permissions
  4. If that was not the case, you can always change the folder permissions by following the simple set of steps presented below.
  5. Use the Win Key + E key combination in order to open File Explorer.
  6. Navigate to the parent folder of the company folder where you company file is located, right-click and select Properties.
  7. Note: You will need to perform these steps for each folder on the list but not all folders may apply to each installation as they refer to a specific version of QuickBooks Desktop. This means that you should do this for the folders below only if they exist on your PC.
  8. C:\Program Data\Intuit\Entitlement Client\v8
    C:\Program Data\Intuit\Entitlement Client\v6.0
    C:\Program Data\Intuit\Entitlement Client\v5
    C:\Program Data\Intuit\Entitlement Client\v3
    C:\Program Data\Intuit\Entitlement Client
    C:\Program Data\Intuit\QuickBooks Enterprise Solutions X.0 (X = version) or C:\Program Data\Intuit\QuickBooks 20XX.
    C:\Users\Public\Public Documents\Intuit\QuickBooks\FAMXX (XX = year)
    C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files
    C:\Users\Public\Public Documents\Intuit\QuickBooks\Sample Company Files\QuickBooks Enterprise Solutions X.0 (X = version) or C:\Users\Public\Public Documents\Intuit\QuickBooks\Sample Company Files\QuickBooks 20XX (XX = year)
  9. Click on the Security tab and select Everyone. If you are not able to see this option, click on Add and type in “Everyone”. Make sure you click OK.
  10. Select the Full Control option and click on either Apply or OK.

Solution 5: Configure the Firewall

Firewalls can prevent QuickBooks from accessing the Internet properly and that is a major concern. Different firewalls may be installed on your computer but it’s not recommended to use more than one. Let’s take a look at how to make sure QuickBooks files are not blocked by Windows Firewall:

  1. Navigate to Control Panel by searching for it in the Start menu and click on System and Security >> Windows Firewall. You can also switch the view to Large or Small icons and click on Windows Firewall instantly.

  1. Select the Advanced settings options and highlight Inbound Rules in the left section of the screen.
  2. Right click on Inbound Rules and click on New Rule. Under the Rule type section, select Port. Select TCP from the first set of radio buttons (TCP is recommended) and switch the second radio button to “Specific local ports. You will need to add the following ports in order to fix QuickBooks updating functionality:

QuickBooks Desktop 2018: 8019, 56728, 55378-55382
QuickBooks Desktop 2017: 8019, 56727, 55373-55377
QuickBooks Desktop 2016: 8019, 56726, 55368-55372
QuickBooks Desktop 2015: 8019, 56725, 55363-55367

  1. Make sure you separate them by a coma right to the last one and click on Next after you have finished.
  2. Select the Allow the connection radio button in the next window and click Next.

  1. Select the network type when you want to apply this rule. If you switch from one network connection to another quite often, it’s recommended that you keep all of the options checked before clicking Next.
  2. Name the rule something which makes sense to you and click Finish.
  3. Make sure you repeat the same steps for Outbound Rules (choose Outbound rules in Step 2).

Kevin Arrows

Kevin Arrows is a highly experienced and knowledgeable technology specialist with over a decade of industry experience. He holds a Microsoft Certified Technology Specialist (MCTS) certification and has a deep passion for staying up-to-date on the latest tech developments. Kevin has written extensively on a wide range of tech-related topics, showcasing his expertise and knowledge in areas such as software development, cybersecurity, and cloud computing. His contributions to the tech field have been widely recognized and respected by his peers, and he is highly regarded for his ability to explain complex technical concepts in a clear and concise manner.