QuickBooks Errors
From QuickBooks database stability to ledger tie-outs, our QuickBooks errors resolution service will fully restore the health of your QuickBooks software.
Get a Free Consultation
Speed Up QuickBooks
Get your work done more efficiently with a faster, fully optimized QuickBooks file.
Prevent Data Corruption
Increase system stability, reduce frequency of errors and stop data corruption.
Improve Network Performance
Eliminate frustration and increase productivity with faster network access to QuickBooks.
Why am I getting a QuickBooks error code?
QuickBooks has more than 500 error codes. The vast majority of them stem from some type of data corruption in the backend database, a problem when upgrading or changing the file (we recommend never upgrading more than 1 year at a time for this reason), or a problem with permissions.
However, most error codes can stem from one of multiple issues, so without getting into the back end of the software and Sybase database it is near impossible to determine the root case. Although each error code comes with suggested steps to fix it, we find that these rarely work and are difficult to properly execute without backend training. If you are getting served an error code we can help you determine the issue, fix the corrupted data, and return a new file with no errors.
- File Repair
- File Condense
- File Consolidation (Merge 2 or more files)
- Database Repair
- Fix Target Chaining Errors
- Fix File Corruption
- Speed Improvement Assessment
- Data Migration
- Downgrade
- Fix Negative Inventory
Customer Story
Fourlane’s File Review process uncovers hidden problems and provides solutions to QuickBooks issues
Contemporary Research’s financials were not accurate and their QuickBooks file was 20 years old and crashed daily and inventory numbers were off. In addition, they did not have an accurate picture of its product costs because the bill of materials for assembly items wasn’t set up properly.


QuickBooks ProAdvisors
Certified QuickBooks Experts
Having performed thousands of QuickBooks implementations and engagements in all fifty states, our team of certified QuickBooks ProAdvisors has knowledge and experience you can rely on in a business partner. Get help with implementing and optimizing the right QuickBooks solution for your business.
Common QuickBooks Error Codes - We Can Help!
With more than 10,000 satisfied customers we have seen it all! We’ve worked with files in use since 1992, files over 12gb, files that crashed daily, and files with severe target chaining errors. Stop letting QuickBooks errors stop or slow down your business. Work with a team of certified QuickBooks ProAdvisors and database technicians who can repair your file, stop errors, and set you up on the path to success.
- “Assertion failed”
- Error c=43 (frequently occurs when processing online/digital transactions)
- Error Message: “An error has occurred. If this is the first time using this account, or you have manually modified your account data, please check your account setup, otherwise call tech support”
- EDLIST.C (retStatus.Succeeded()) is false
- LVL_ERROR; LVL_ERROR–Connection; LVL_ERROR–** Corrected **
- LVL_ERROR–Warning: Verify Name list: totInList was xx. Should be yy
- Verify list index Name: Invalid index entry
- Verify Name List Item xx: View out of sequence.
- Error: Verify Name Estimate Balance failed. Name = xx
- LVL_FATAL_ERROR–Cannot Continue–check for pEdList->hView == 0 failed.
- (pEdList->hView == 0) is false
- Error (-6177,-0), (-6178,-0), -6108, -105 or (-6179,-0)
- LVL_ERROR–DMError
- “QBW – an error has occurred in your program… Close or Ignore” when closing a QBW file (close & ignore both result in GPF in module QBCHAOS.DLL).
- “This is not a Quickbooks data file or data is from a newer version. Check to ensure that the path and file name of the QBW file are correct.”
- Please restart QuickBooks and try again. If you continue to experience this error, please note the C= value and contact technical support.
- Quickbooks Error “-6150 -1006”, “-6177,0”, “-1,0”, “C=224”, “-6000, -305”, (-6000, -305), -6000,301 “ASSERTION FAILED” *** ERROR *** Assertion failed: 123456 (x.0.x.xxxx)
- Quickbooks Error Codes (-6150, -1006)
- Quickbooks Error Codes (-6000, -301)
- Quickbooks Error Codes (-6189, -82)
- Quickbooks Error Codes (-6000, -305)
- Quickbooks Error Codes (-6123, -xxx)
- Quickbooks Error Codes (-6177, 0)
- Quickbooks Error Codes (-6000, -30)
- The -6000 error code series (-6000, -30), (-6000, -301), (-6000, -305), (-6123, -xxx), (-6150, -1006), (-6177, 0), (-6189, -82)
- All C=nn errors
- “Connection to company file has been lost”
- “File may be damaged”
- “Connection to company file has been lost”
- Data contains duplicate list items
- C=88 (problem reading one or more of the data trees in the file – loss of network connection)
- C=102 (list problems – usually version 5 and earlier)
- C=43 (can’t read transaction)
- C=44 (can’t write transaction)
- C=47 (can’t find transaction) – Usually happens during reporting
- C=53 (list item still exists after being deleted)
- C=79 (problem with inventory data)
- C=121 (invalid account type) | C=225 (error reading transaction) | C=291 (problem with templates)
- C=315 (a generic error that can occur anywhere within QuickBooks)
- C=342 (usually followed by an IPF in APPCORE.DLL – damaged data tree)

Industry Experts
A Partner That Understands Your Business & Industry
Fourlane’s consultants have worked with thousands of businesses within virtually every industry to help tailor QuickBooks and their ERP systems to fit the unique needs their industry requires. Whether you run a small retail store, an international manufacturing business, a residential construction company, a law firm, a software company, or a fast growing nonprofit, we’ve seen it, done it, and can help.
- Accounting & Finance
- Advertising & Marketing
- Agriculture
- Biotech & Pharmaceuticals
- Computer / IT Services
- Computer Software
- Construction & Contracting
- Distribution & Wholesale
- eCommerce
- Education
- Energy / Utilities
- Engineering
- General Business
- Government
- Healthcare / Medical
- Health & Beauty
- Insurance
- Legal
- Logistics / Transportation
- Manufacturing
- Media / Publishing
- Nonprofit
- Professional Services
- Real Estate
- Restaurant / Hospitality
- Retail
- Telecommunications
What Our Clients Are Saying














What Our Clients Are Saying
“Fourlane is a stellar organization as a whole. They are in it for the long haul and it shows.”

“I put my company’s future in Fourlane’s hands, and they delivered! Thank you!”

“I enjoyed my experience with Fourlane and would recommend them for software conversion.”

Join thousands of businesses who trust Fourlane with their books
Whether you’re currently using QuickBooks and need professional consulting services, are looking to buy QuickBooks or even outgrowing QuickBooks, we can help.