Showing results for 
Search instead for 
Did you mean: 
Level 1

Error codes -6190 and -816

error codes -6190 and -816 after using QB file doctor and QB Desktop Install Diagnostic Tool.  I have also tried restoring my company file and reinstalling QB on both machines that need to run QB at the same time.

i get an error in the diagnostic tool "component repair win10" it seems to fix it, but comes up again if i run the tool after rebooting.

anyone have ideas? i feel like I've tried almost everything!

3 Comments 3
QuickBooks Team

Error codes -6190 and -816

Hi valerie,

I'll help you get past this error message and have your QuickBooks Desktop up and running. 

You'll get error codes -6190 and -816 when another user is logged in to the company file in a single user mode. There are several solutions we can try to resolve this. 

Let's first make sure that your QuickBooks release is up-to-date. Then, rename the ND and TLG files to repair the company damaged data files.

Here's how:

  1. Open the folder that contains your company file.
  2. Find the files with the same file name as your company files but with extensions.ND and.TLG.
    • company_file.qbw.nd
    • company_file.qbw.tlg
  3. Right-click each file and select Rename. Add the word OLD at the end of each file name. Ex: company_file.qbw.nd.OLD
  4. Open QuickBooks again and try to sign in to your company file. If the same issue occurs, proceed to solution 2.

You can also check out this article for more troubleshooting steps about the error -6000: Resolve Error -6000, when opening a company file

I'd also suggest giving us a call so one of our Technical Support specialists can guide you through the process. Here's how to get in touch with our QuickBooks Desktop Customer Care:

  1. Go to
  2. Select QuickBooks for Windows.
  3. Select your QuickBooks for Windows version.
  4. Select a topic.
  5. Click on the Get Phone Number button.

You can always visit us anytime soon if you have any questions.We're here to help however we can. 

Level 1

Error codes -6190 and -816

What if you can't rename the .TLG file because it claims that it's in use?  How do you unlock that?

QuickBooks Team

Error codes -6190 and -816

Hi there, @Q_B_GRRRR


Thank you reaching out to the Community. First we need to make sure that your QuickBooks is up to dated. This will help you fixed minor issue on your files. After that you can follow my colleague steps provided above on how to rename the file. You need to ensure at the end of the file you add word OLD. EX. company_file.qbw.tlg.OLD.  


However, if you're getting the same results, I highly recommend contacting our QuickBooks Desktop Support Team. They can further investigate why you're unable to rename the file. 


Before doing so, please check out our support hours to ensure that we address your concerns on time. Here's how to connect with our Customer teams: 


  1. Sign in to your company account, then click Help.
  2. Choose QuickBooks Desktop Help.
  3. Hit Contact Us
  4. Enter the question in the description field, then click Search
  5. Select either Message Us or Call Us.      








Just a heads up, we have limited staffing and have reduced our support hours to 6 AM-6 PM PT Monday-Friday due to COVID-19. We will resume normal hours as soon as possible. 


You can check out this article for more troubleshooting steps about the error when changing the company file name: Resolve Error -6000, when opening a company file.


Let me know how everything goes by leaving a comment below or if there's anything else I can help you. I'm always around to help you out. Take care!

Need to get in touch?

Contact us