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Are you constantly getting QuickBooks Error 6123 when trying to open your company file or restore a backup? You're not alone. This frustrating error can bring yoworkflow to a halt, especially when you're in the middle of important financial tasks. But what causes this issue, and more importantly, how can you fix it without losing data or wasting hours?
In this article, we’ll explore the reasons behind QuickBooks Error 6123, offer actionable troubleshooting steps, and explain when it’s best to call expert support at 1-855-526-5749.
QuickBooks Error 6123 is a part of the 6000-series errors that typically occur when you attempt to open a company file. Specifically, error 6123 appears with the message:
"Error -6123,0: Connection to the QuickBooks company file has been lost."
This issue may occur in both single-user and multi-user environments, and it can surface when:
There are several possible reasons why you might see this error:
Let’s go through a few reliable methods to troubleshoot this error. Start with the simplest and work your way down the list.
QuickBooks uses network descriptor (.ND) and transaction log (.TLG) files to open company files in multi-user mode. Corruption in these files can trigger error 6123.
Steps:
Sometimes the path is too long or corrupted. Moving the file to a new folder can help.
Steps:
QuickBooks File Doctor is a tool provided by Intuit to resolve common file and network errors.
Steps:
Sometimes, security software incorrectly flags QuickBooks as a threat. Temporarily disable your antivirus/firewall and see if the issue resolves. If it does, whitelist QuickBooks in your antivirus settings.
If the problem is tied to your Windows user profile:
Steps:
While many users can resolve the issue using the steps above, sometimes the problem is more complex—especially if the file is severely damaged or hosted on a remote server. In those cases, don’t waste time trying to figure it out alone. Call QuickBooks Support at 1-855-526-5749 for expert assistance.
Their certified technicians can:
Q1. Can I fix Error 6123 without any technical knowledge?
Yes, many users fix it by simply renaming files or moving the company file. But if you're unsure, calling 1-855-526-5749 is the safest bet.
Q2. Is this error related to my QuickBooks version?
Not necessarily. QuickBooks Error 6123 can happen in any version, including QuickBooks Pro, Premier, and Enterprise.
Q3. Will I lose my company data because of this error?
In most cases, no. But you should always create a backup before attempting any fix.
QuickBooks Error 6123 can be a major inconvenience, but it doesn’t have to derail your workday. Whether it’s a damaged file, a network issue, or a software conflict, there’s almost always a solution.
Try the troubleshooting steps listed above to fix the problem on your own. But if you run into difficulties or need faster results, don’t hesitate to call QuickBooks Support at 1-855-526-5749. Their experts are available to help you get back to business quickly and safely.
In this article, we’ll explore the reasons behind QuickBooks Error 6123, offer actionable troubleshooting steps, and explain when it’s best to call expert support at 1-855-526-5749.
What Is QuickBooks Error 6123?
QuickBooks Error 6123 is a part of the 6000-series errors that typically occur when you attempt to open a company file. Specifically, error 6123 appears with the message:
"Error -6123,0: Connection to the QuickBooks company file has been lost."
This issue may occur in both single-user and multi-user environments, and it can surface when:
- Opening a company file directly
- Restoring a backup file (.qbb)
- Accessing a file over a network
What Causes QuickBooks Error 6123?
There are several possible reasons why you might see this error:
- Damaged Company File (.QBW) – If your file is corrupted, QuickBooks will struggle to open it.
- Incorrect File Path – If the company file was moved or renamed improperly.
- Network Connection Issues – Particularly in multi-user mode or when the file is hosted on another computer/server.
- Firewall or Security Software Blocking QuickBooks – Overprotective security settings can block access.
- Damaged Windows User Profile – Sometimes, your user credentials can become corrupted.
- Conflict with Security Software or Background Processes – Software like McAfee or AVG may interfere with QuickBooks’ processes.
How Can You Fix QuickBooks Error 6123?
Let’s go through a few reliable methods to troubleshoot this error. Start with the simplest and work your way down the list.
1. Rename the .ND and .TLG Files
QuickBooks uses network descriptor (.ND) and transaction log (.TLG) files to open company files in multi-user mode. Corruption in these files can trigger error 6123.
Steps:
- Navigate to the folder containing your company file.
- Look for files with the same name as your company file but with extensions .ND and .TLG.
- Rename them (e.g., companyfile.qbw.nd → companyfile.qbw.nd.old).
- Try reopening the company file.
2. Move the Company File to a New Location
Sometimes the path is too long or corrupted. Moving the file to a new folder can help.
Steps:
- Create a new folder on your desktop.
- Move the .QBW file into this new folder.
- Open QuickBooks and browse to the new location to open the file.
3. Use QuickBooks File Doctor
QuickBooks File Doctor is a tool provided by Intuit to resolve common file and network errors.
Steps:
- Download and install QuickBooks Tool Hub from Intuit’s website.
- Launch it and go to the Company File Issues tab.
- Select Run QuickBooks File Doctor.
- Choose your company file and let the tool scan for problems.
4. Disable Firewall and Security Software Temporarily
Sometimes, security software incorrectly flags QuickBooks as a threat. Temporarily disable your antivirus/firewall and see if the issue resolves. If it does, whitelist QuickBooks in your antivirus settings.
5. Create a New Windows User Profile
If the problem is tied to your Windows user profile:
Steps:
- Go to Settings > Accounts > Family & other users.
- Create a new local account.
- Log in with the new account and try opening QuickBooks again.
When Should You Call Support?
While many users can resolve the issue using the steps above, sometimes the problem is more complex—especially if the file is severely damaged or hosted on a remote server. In those cases, don’t waste time trying to figure it out alone. Call QuickBooks Support at 1-855-526-5749 for expert assistance.
Their certified technicians can:
- Analyze and repair corrupt files.
- Help with server configuration in multi-user mode.
- Guide you through advanced troubleshooting steps safely.
- Minimize your downtime and protect your data.
Frequently Asked Questions
Q1. Can I fix Error 6123 without any technical knowledge?
Yes, many users fix it by simply renaming files or moving the company file. But if you're unsure, calling 1-855-526-5749 is the safest bet.
Q2. Is this error related to my QuickBooks version?
Not necessarily. QuickBooks Error 6123 can happen in any version, including QuickBooks Pro, Premier, and Enterprise.
Q3. Will I lose my company data because of this error?
In most cases, no. But you should always create a backup before attempting any fix.
Final Thoughts
QuickBooks Error 6123 can be a major inconvenience, but it doesn’t have to derail your workday. Whether it’s a damaged file, a network issue, or a software conflict, there’s almost always a solution.
Try the troubleshooting steps listed above to fix the problem on your own. But if you run into difficulties or need faster results, don’t hesitate to call QuickBooks Support at 1-855-526-5749. Their experts are available to help you get back to business quickly and safely.