7 Ways to Fix QuickBooks Error 6123, 0

Are you staring at your screen in frustration because of <a href="https://www.qbookshub.com/quickbooks-error-6123/">QuickBooks Error 6123</a>? You're not alone. This error has a nasty habit of popping up when users try to open or restore a company file. But don’t worry—by the end of this guide, you’ll have clear answers, actionable steps, and a lifeline via +1-866-409-5111 if things get too technical. <hr data-start="855" data-end="858" /> <h2 data-start="860" data-end="899">What is QuickBooks Error 6123?</h2> QuickBooks Error 6123 occurs when: <ul data-start="937" data-end="1091"> <li data-start="937" data-end="1004"> You're opening a company file from a network or multi-user setup. </li> <li data-start="1005" data-end="1038"> You're restoring a backup file. </li> <li data-start="1039" data-end="1091"> The connection to the company file gets disrupted. </li> </ul> This error message usually looks like: <blockquote data-start="1132" data-end="1207"> "Error -6123, 0: We’re sorry, QuickBooks can’t open your company file." </blockquote> It's annoying, yes—but completely fixable. <hr data-start="1253" data-end="1256" /> <h2 data-start="1258" data-end="1304">Main Causes of QuickBooks Error 6123</h2> Understanding what triggers the error is key to resolving it. Here are the top culprits: <ul data-start="1400" data-end="1705"> <li data-start="1400" data-end="1436"> Damaged company file (.QBW) </li> <li data-start="1437" data-end="1495"> Incorrect network setup or firewall configuration </li> <li data-start="1496" data-end="1535"> Corrupted Windows user profile </li> <li data-start="1536" data-end="1591"> Issues with <a href="https://www.qbookshub.com/quickbooks-database-server-manager/">QuickBooks Database Server Manager</a> </li> <li data-start="1592" data-end="1649"> Special characters in the file name or file path </li> <li data-start="1650" data-end="1705"> Interrupted connection during file restoration </li> </ul> <hr data-start="1707" data-end="1710" /> <h2 data-start="1712" data-end="1753">How to Fix QuickBooks Error 6123</h2> Below is a step-by-step guide to eliminate this error. Try these methods in order, and make sure to backup your company file before you proceed. <hr data-start="1909" data-end="1912" /> <h3 data-start="1914" data-end="1962">1. Use QuickBooks Tool Hub (Recommended)</h3> QuickBooks Tool Hub is your go-to fix-it kit. Steps: <ol data-start="2022" data-end="2282"> <li data-start="2022" data-end="2042"> Close QuickBooks. </li> <li data-start="2043" data-end="2146"> Download the <a class="cursor-pointer" target="_new" rel="noopener" data-start="2059" data-end="2145">QuickBooks Tool Hub</a>. </li> <li data-start="2147" data-end="2176"> Install and open the tool. </li> <li data-start="2177" data-end="2232"> Click Company File Issues > Run File Doctor. </li> <li data-start="2233" data-end="2282"> Choose your file and let it diagnose & repair. </li> </ol> <blockquote data-start="2284" data-end="2351"> Still stuck? Call +1-866-409-5111 for expert troubleshooting. </blockquote> <hr data-start="2353" data-end="2356" /> <h3 data-start="2358" data-end="2398">2. Rename the .ND and .TLG Files</h3> These configuration files can often get corrupted. Steps: <ul data-start="2463" data-end="2670"> <li data-start="2463" data-end="2517"> Navigate to the folder containing your company file. </li> <li data-start="2518" data-end="2603"> Find files with the same name as your company file, ending in .ND and .TLG. </li> <li data-start="2604" data-end="2667"> Right-click each file and rename by adding <code data-start="2649" data-end="2655">.old</code> at the end. </li> </ul> Example: <code data-start="2680" data-end="2702">MyCompanyFile.qbw.nd</code> → <code data-start="2705" data-end="2731">MyCompanyFile.qbw.nd.old</code> Reopen QuickBooks and try again. <hr data-start="2767" data-end="2770" /> <h3 data-start="2772" data-end="2810">3. Restore Backup File Locally</h3> If you're restoring from an external drive or network, copy the backup file to your local hard drive. Steps: <ul data-start="2930" data-end="3058"> <li data-start="2930" data-end="2974"> Paste it in a folder like <code data-start="2958" data-end="2973">C:\QBRestore\</code>. </li> <li data-start="2975" data-end="3033"> Ensure the file path contains no special characters. </li> <li data-start="3034" data-end="3058"> Try the restore again. </li> </ul> <hr data-start="3060" data-end="3063" /> <h3 data-start="3065" data-end="3116">4. Check Your Firewall & Antivirus Settings</h3> Sometimes, security software gets overprotective. Steps: <ul data-start="3180" data-end="3326"> <li data-start="3180" data-end="3229"> Temporarily disable your firewall or antivirus. </li> <li data-start="3230" data-end="3262"> Try opening your company file. </li> <li data-start="3263" data-end="3326"> If it works, adjust the settings to allow QuickBooks through. </li> </ul> <hr data-start="3328" data-end="3331" /> <h3 data-start="3333" data-end="3377">5. Create a New Windows User Profile</h3> Corrupted profiles can block access to files. Steps (Windows 10): <ul data-start="3450" data-end="3621"> <li data-start="3450" data-end="3505"> Go to Settings > Accounts > Family & other users. </li> <li data-start="3506" data-end="3546"> Click Add someone else to this PC. </li> <li data-start="3547" data-end="3621"> Give admin access and try opening QuickBooks again from the new profile. </li> </ul> <hr data-start="3623" data-end="3626" /> <h3 data-start="3628" data-end="3688">6. Manually Fix Network Issues (For Multi-user Mode)</h3> If you're on a multi-user network: <ul data-start="3726" data-end="3925"> <li data-start="3726" data-end="3802"> Ensure QuickBooks Database Server Manager is installed on your server. </li> <li data-start="3803" data-end="3864"> Use Tool Hub’s Network Issues tab to diagnose problems. </li> <li data-start="3865" data-end="3925"> Keep the server and host computer turned on and connected. </li> </ul> <hr data-start="3927" data-end="3930" /> <h2 data-start="3932" data-end="3981">Pro Tips to Prevent Error 6123 in the Future</h2> <ul data-start="4304" data-end="4587"> <li data-start="4304" data-end="4355"> Always update QuickBooks to the latest release. </li> <li data-start="4356" data-end="4403"> Keep regular backups of your company file. </li> <li data-start="4404" data-end="4455"> Maintain a stable internet/network connection. </li> <li data-start="4456" data-end="4518"> Periodically run File Doctor to check for file integrity. </li> <li data-start="4519" data-end="4587"> Avoid special characters in file names like <code data-start="4568" data-end="4571">@</code>, <code data-start="4573" data-end="4576">#</code>, <code data-start="4578" data-end="4581">%</code>, etc. </li> </ul> <hr data-start="4589" data-end="4592" /> <h2 data-start="4594" data-end="4657">Conclusion</h2> QuickBooks <a href="https://quickbooks.intuit.com/learn-support/en-us/other-questions/unable-to-open-a-qbw-file-error-code-6123-0/00/1072433">Error 6123</a> may feel like a dead-end, but it's actually a well-documented issue with proven solutions. Whether you go the DIY route or contact our team at +1-866-409-5111, your accounting software will be back on track in no time. Remember: the sooner you act, the lower the risk of data damage. So bookmark this page, try the fixes, and call our support line when you need that extra hand.