You have an incorrect data signature if you see the QuickBooks POS Error 1330 error on your computer screen. The error occurs when you attempt to reinstall POS (Point of Sale) version 7 on Windows XP. QuickBooks error 1330 is regarded as an unrecoverable error and it needs to be resolved right away to prevent interference with your company’s accounting operations. You must ascertain the causes of the error before arriving at the answers.

Let’s first determine the causes of QuickBooks Error 1330 before moving on to the solutions.

QuickBooks Error Code 1330 - Screenshot
QuickBooks Error Code 1330 – Screenshot

Read Also: How to fix Error 6000, 77 in QuickBooks desktop?

Causes of Error 1330 in QuickBooks Point of Sale

  • ‘Authorized digital signs‘ that have been damaged and are part of cab files.
  • POS” and “Windows Operating system” play a significant role in the issue, which is partially why it appears.
  • The system’s incorrect date and time might also cause QB POS Error 1330.
  • The process of installing QB is being disrupted by security software.
  • Your company file has been harmed.
select user account - Screenshot
select user account – Screenshot

How to Fix QuickBooks Error 1330?

Now, keep a backup of all pertinent files and data before troubleshooting issue 1330:

Solution 1: Update QuickBooks Point of Sale

  1. Restart the computer first. Log in as an Administrator after that.
  2. Then download the Point of Sale update on your computer.

Close all running apps at this time, then carry out the following actions:

  • Go to the Processes tab in Task Manager.
  • For these EXE files, end the process:
  1. Qbpos.exe
  2. QBPOSShell.exe
  3. QBPOSDBService.exe
  • Close the following POS services that are currently operating on your computer: QBPOS Database Manager vXX
  • Next, look through each MSC file.
  • Don’t forget to shut down the POS service and service window after searching for QBPOS Database Manager vXX in the services window.
  • Additionally, be sure to delete all data associated with the changed product folder.

Update the QB POS before closing the Windows Explorer dialogue box.

See Also: Steps to fix QuickBooks install error 1904

Solution 2: Re-install the QuickBooks POS – Invalid Digital Signature

You can remove QuickBooks Point of Sale by using the following techniques:

  • Firstly, uninstall the QuickBooks POS.
  • Then, save the data to your computer and quit all the running programs.
  • After that, open the Windows Start menu and select Run.
  • Enter the word “control panel” into the area.
  • Then select Add or Remove Programs from the menu. You can see the various programs that are currently installed on your system here.
  • Select QuickBooks POS—> Change/remove option from the list. Select Yes from the prompt box that displays.
  • POS from the C drive should be renamed after removal.
  • Go to C:\Documents and settings—> and rename the user folder of QBPOSDBSrv.
  • Last but not least, remove the QBPOSDBSrv user’s login.
  • Again, open the Windows Start menu, choose Run, enter UAC in the search bar, and then press enter.
  • Click the user tab in the User Accounts section.
  • There will be a list. Select the QBPOSDBSrv user here. Delete the account after that.

Last but not least, restart the computer and reinstall the QuickBooks Point of Sale program.

See Also: Troubleshooting steps for QuickBooks error 6150


We’ve already talked about what QuickBooks POS Error 1330 is. We have covered the causes of the 1330 error in your system in this blog. In that situation, solutions are provided so that QuickBooks Error 1330 won’t affect the efficiency of your company. Once the issue has been fixed, you may quickly carry out your business operations with organized financial data.

You can contact our Intuit QuickBooks Error Support Team if you’re still having trouble fixing Error 1330.


Read Also:

How to Fix QuickBooks Error 6000, 80?

How to Resolve QuickBooks Error Code 6154?

Methods to resolve QuickBooks error code 6189

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