Using QuickBooks to manage your small business finances can be extremely helpful. However, like any software program, QuickBooks can encounter errors from time to time that disrupt your work. Knowing the most common QuickBooks errors and how to quickly resolve them can save you significant time and frustration. This article outlines 20 of the top QuickBooks errors and tips for troubleshooting them.

1. Error Code H202 - Unable to Connect to QuickBooks Company File

If you get an H202 error in QuickBooks, it typically means that another user has the company file open in multi-user mode, preventing you from accessing it. To resolve:

  • Make sure the company file is not open on another computer
  • Try to access the file again in 10-15 minutes
  • Switch to single-user mode if the error persists

2. Error Code OL-301 - QuickBooks Unable to Open Company File

The OL-301 error appears when QuickBooks cannot locate or open your company file. Potential fixes include:

  • Verify the company file exists in the location specified
  • Use the File Doctor tool to locate the missing file
  • Correct the file path to the company file if incorrectly mapped

3. Error Code 6000 77 - QuickBooks Unable to Open Company File

This error indicates the company file is corrupt or damaged. To troubleshoot:

  • Run a Validate and Rebuild to repair any data damage in the file
  • Restore the file from the most recent backup
  • Contact Intuit Technical Support for further analysis

4. Error Code 6000 80 - QuickBooks Unable to Open Company File

Error 6000 80 occurs because of an invalid drive, missing drive, or lost, deleted, or damaged company file. Try:

  • Checking for a valid and mapped company file drive
  • Using File Doctor to locate a moved or renamed company file
  • Restoring a backup if the original file cannot be found

5. Error Code 1328 - QuickBooks Update Error

If Intuit releases a buggy update, you may get Error 1328 when trying to update QuickBooks. Solutions include:

  • Download and install the latest QuickBooks update
  • Switch to single-user mode before updating
  • Use clean install to correctly update QuickBooks

6. Error Code 12029 - QuickBooks Installation Errors

Code 12029 usually appears during installation of QuickBooks and is often related to an incomplete prior installation. To fix:

  • Delete all temporary files before reinstalling
  • Perform a clean reinstall of QuickBooks after uninstalling
  • Install all Windows updates before QuickBooks installation

7. Error Code 17337 - QuickBooks Browser Integration Error

This error indicates issues integrating QuickBooks with web browsers, typically due to security settings, plugins, extensions or compatibility problems. Fixes include:

  • Allow third-party cookies and plugins in your web browser
  • Update or reinstall the QBWebConnector tool
  • Enable TLS 1.2 protocols in your browser and firewall

8. Error Code 8007045D - QuickBooks Update Error

Displayed during QuickBooks updates, error 8007045D is usually caused by incomplete, damaged, or interrupted updates. Resolve by:

  • Downloading and cleanly reinstalling the latest update
  • Switching to single-user account during updates
  • Ensuring no other programs run during the update process

9. Error Code 1723 - Damaged Windows Installer Package

Code 1723 arises when Windows Installer files get damaged, blocking QuickBooks installations and updates. To troubleshoot:

  • Download and reinstall the latest Windows Installer
  • Perform clean reboot before QuickBooks installation
  • Temporarily disable antivirus during install/update

10. Error Code 1904 - QuickBooks Database Server Manager Fails to Initialize

Error 1904 stems from Database Server Manager failure, obstructing multi-user access. Fix by:

  • Rebooting and restarting the Database Server Manager
  • Reinstalling QuickBooks Database Server Manager
  • Ensuring TCP/IP protocols and ports enabled on all machines

11. Error Code 6000 -83 - QuickBooks Unable to Communicate with Company File

This error indicates QuickBooks cannot connect to the company file database due to damaged files, network issues, or poor communication via TCP/IP ports. Solutions include:

  • Configuring firewalls to allow QuickBooks traffic on ports
  • Validating company file using File Doctor tool
  • Rebuilding data connections and reconfiguring a new path to company file

12. Error Code C=342 - QuickBooks Desktop Authentication Failure

Displayed during QuickBooks Desktop login, C=342 errors relate to authentication failures from password issues or damaged files containing authentication data. Fix by:

  • Resetting the QuickBooks Desktop password
  • Creating new authentication credentials
  • Using File Doctor to inspect and repair damaged company files

13. Error Code OLSU-1024 - QuickBooks Unable to Convert Company File

Appearing when converting older company files to the latest QuickBooks version, OLSU-1024 errors indicate convertibility or compatibility issues. Troubleshoot by:

  • Installing the latest QuickBooks updates
  • Trying file conversion using single-user mode
  • Contacting QuickBooks tech support for manual conversion help

14. Error Code 6000 77 During QuickBooks Backup

Error 6000 77 isn't limited to opening company files - it can also appear when backing up your company file data. Resolve backup issues by:

  • Verifying sufficient disk space for backup
  • Testing backups in single-user mode
  • Choosing a different backup location

15. QuickBooks Error Code 15270

Indicating that browser security settings prevent QuickBooks Integration Tools from working correctly, 15270 errors obstruct synchronizations between QuickBooks desktop and online apps. Fix by:

  • Configuring browsers to allow third-party plugins
  • Installing tls 1.2 protocols on all connected devices
  • Adding QuickBooks apps to trusted sites in your browser

16. Error Codes 80029c4a and 80029c4b

These errors relate to QuickBooks failing to launch completely, resulting in a white screen due to installation problems, corrupted files or registry entries. Solutions include:

  • Using clean boot to correctly reinstall QuickBooks
  • Running File Doctor and validating your company file
  • Editing the Windows registry to remove corrupted keys

17. QuickBooks Error 6190, 816

These codes represent authorization or authentication failures when attempting to access an Intuit account or validate QuickBooks accounting software, typically due to incorrect login details, network obstructions, or account access issues managed by Intuit. Fix by:

  • Resetting Intuit account password
  • Confirming internet connectivity
  • Contacting Intuit customer service

18. Error Code 6144 82

This error indicates multiple root causes preventing QuickBooks from saving data changes or transactions, including full disk drives, corrupted company files, multi-user mode issues, and network connectivity problems. Troubleshoot by:

  • Freeing disk space
  • Using File Doctor to identify and repair company file damage
  • Switching to single-user mode

19. Error Code 12031 - Re-enable QuickBooks PDF Converter

Displayed when exporting or modifying PDF files within QuickBooks, error 12031 means the integrated PDF converter has been disabled and needs reactivation. Fix by:

  • Re-enabling QuickBooks PDF Converter in preferences
  • Validating company file to clear associated corruption
  • Uninstalling and reinstalling QuickBooks PDF converter

20. QuickBooks Error Code 6000 304

This error points to multi-user mode connectivity issues, typically from problems like incorrect database server login credentials, blocked IP ports and protocols, or firewalls obstructing access between machines. Resolve by:

  • Verifying correct login details
  • Configuring firewalls and ports for multi-user access
  • Checking integrity of all server connections

Troubleshooting QuickBooks Errors

Many common QuickBooks errors can be reliably fixed or at least diagnosed using simple techniques:

  • Update QuickBooks desktop and server tools to the latest versions
  • Switch to single-user mode to isolate potential multi-user issues
  • Validate and rebuild damaged company file data
  • Use the QuickBooks File Doctor tool to inspect errors and repair company files
  • Restore recent backups in case of damaged or corrupted company files
  • Reinstall QuickBooks cleanly after completely uninstalling prior copies
  • Configure browser, firewall and networking settings to enable QuickBooks traffic

I hope this overview gives you a helpful head start troubleshooting some of the most common QuickBooks errors! Let me know if you have any other questions.