How to Fix QuickBooks Error 6123

How to Fix QuickBooks Error 6123

How to Fix QuickBooks Error 6123

QuickBooks Error 6123 is a common issue when opening, upgrading or restoring company files on a network server.

Error 618 occurs due to corrupt Windows OS files or when changing the system name on a PC hosting the company file, among other causes.


QuickBooks Error 6123 is an error that many users encounter when trying to open or update their company file in QuickBooks. There may be various causes behind it; one being compatibility issues between versions of QuickBooks and the Windows OS.

Step one in solving this error is updating your software and manually taking a backup of your company file, this way ensuring no data loss during this process.

One way of solving this error is renaming your company file, as this will eliminate any name issues and ensure compatibility with QuickBooks’ most up-to-date version.

To rename a file, it will require using a text editor – either online or offline depending on your needs – in which you must locate and delete any undesirable characters from your file before saving. Once complete, save it back.

Alternatively, if this doesn’t solve your problem, use QuickBooks Tool Hub’s free repair option to restore your company file. It will fix everything for free!

This method will enable you to repair and restore your company file, getting it back online again. With its ease-of-use tool, this solution allows you to rename files, remove special characters, or repair corrupted data within the file.

Repair the TLG and ND files as these contain network configuration settings necessary for QuickBooks running in cloud or multi-user environments.

Other causes for this error could include damaged data files, multiple QuickBooks database servers running simultaneously on your system or an infected Windows OS. You can use one or more of the methods above to resolve this error or reach out to Intuit’s support team for further assistance.

If your QuickBooks installation continues to have issues, consider hosting it instead; installing on an external server provides more reliable results than simply installing the software yourself.

Corrupted Company File

QuickBooks Error 6123

QuickBooks accounting software enables businesses to complete various accounting tasks quickly and effectively. Unfortunately, however, it also comes with errors that may be bothersome; one such issue is Error 6123 in QuickBooks which needs immediate resolution.

Error occurs when users attempt to open, upgrade, or restore their company file and receives the error message “Connection to QB Company File has Been Lost”

There are various potential causes of this issue, including a corrupted company file. If this is indeed the case for you, upgrading to the latest version of QuickBooks should fix this issue; or you could run QuickBooks File Doctor to identify and resolve the problem.

Another possible source of error could be antivirus software on your computer, as many antivirus programs block files used by QuickBooks which impede its ability to access its company files.

Disabling and updating your antivirus programs to the most up-to-date versions may help resolve the issue of opening company files again.

If your company file still can’t be opened, renaming may help. Remove any special characters like!, @, $, %, &, * or (,). Right-click and choose Rename when right-clicking on it to save this process.

Once your company file has been renamed, you can begin working on it again. Be sure that it’s backed up before beginning work with it again.

For an easier restoration process, create a portable copy and launch QuickBooks Desktop on another device. Or use QuickBooks Auto Data Recovery tool to safely restore it.

Checking user permissions to determine whether they have access and can utilize company files. If they do, click on the Advanced button and change their permissions by selecting Change Permissions from within their profile.

Corrupted File Path

If the company file in QuickBooks has become corrupted, you may no longer be able to open it. A QuickBooks company file repair tool can help resolve this problem and restore all of your data.

Corrupt QuickBooks data files may arise for various reasons, including network connection problems or hardware/software malfunction. Such issues could prevent you from opening the file as well as potentially damage them if not addressed promptly.

One way to prevent QB company file corruption is by regularly backing up your data, so if it becomes corrupted you can quickly recover it.

Uninterruptible power supplys (UPSs) are another great way to prevent corruption in Quickbooks data files, helping prevent short-term power interruptions from wreaking havoc with company files on computers. An UPS is designed to protect from temporary power spikes which could otherwise disrupt operation of company files on computers and cause them to corrupt over time.


Additionally, an automatic backup program for your data may also help protect a QB company file from becoming corrupted. These programs allow for automatic back-up of company information to protect it against theft or accidental deletion.

However, the most effective way to prevent QuickBooks company file corruption is to keep it safe on your computer – meaning avoiding downloading potentially hazardous files that could lead to data corruption.

Rebuild Data in QuickBooks can also be used to resolve minor company file data problems, as it will pull apart and reorganize existing information in an orderly fashion. After it has completed its work, use Verify Data function to check that everything remains intact.

Last but not least, review the logs that QuickBooks generated during its verification process. These logs will detail which items and transactions are causing issues in your company file as well as any necessary changes you can make in order to address these problems.

Corrupted User Account

If a user account on your computer has become corrupted, you may find yourself unable to connect to QuickBooks. This could be caused by any number of factors; first off all, company files could have been damaged, passwords compromised and/or your company data has become inaccessible.

Depending on the complexity requirements of your business, resetting the password for each user account might be necessary before being able to log into QuickBooks. Be mindful when choosing a new one – its length must meet those specifications!

One way to address this problem is with the assistance of Intuit’s free tool to repair user accounts. This program scans network files and company files to see what might be causing issues, before offering solutions that address any discrepancies found therein.

An alternative solution would be to utilize a backup program to restore the company file from a local backup copy, which will repair and delete any corruption in its contents. Please keep in mind, however, that single-user mode must be enabled before beginning this process and that an Administrator password must be entered before completion of this step.

QB File

Use the QB File Doctor to scan and analyze your company file. This online tool can fix certain forms of file and data corruption as well as Windows setup issues and network setup issues.

Corrupted user accounts are common in multi-user environments such as small business networks, and may be caused by any number of factors – the network data file could have become corrupt, transaction log files could have gone missing, or Firewall settings on your computer could have prevented access to QuickBooks.

Additionally, you should check if you have administrator privileges on your computer and change permissions accordingly to grant users with that level of access to access the QuickBooks database manager.

If none of these methods work to rectify your user account issues, consulting a certified professional for help may be your best bet. They have experience dealing with similar situations quickly and efficiently so you can resume normal operations uninterrupted.

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