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Established Member

error 6123

I get 6123 on my company files. I tried a new computer, tried a fresh write of os, QuickBooks 2019. I have qb2019  windows 10 1903.  I tried renaming nd and  files The problem is that sometimes the company opens up and sometimes this error. tried 3 different computers. it seems to work the best on a win 7 machine that's upgraded to win 10.(it opens 7 out of 10 times. I ran diagnostic tool, file doctor and tool hub. I am going back to 1809 to see if any changes. It maybe the company file, but I set up a new computer last week also and it does the same thing. I am out of ideas. Cant you point me to another direction?

1 Comment
QuickBooks Team

Re: error 6123

I appreciate the complete details you've shared, @jokl12345.


Error 6123 is caused by restoring a company file from an external storage device or a disrupted network connection from the host server. I'll be glad to help you to fix this error.


Also, it's possible that your firewall settings are interrupting QuickBooks to open the company. 

Here's how:

  1. Create a back-up of your company file.
  2. Download and Install QuickBooks Tools Hub.
  3. Run QuickFix my Program.
  4. Run File Doctor.

For more detailed steps, you may check this article: How to fix Error 6123, 0.


Keep me posted if you have other questions. Wishing you a good one!