Hello there, @Goeze07. Let's team up to help you fix the error you encountered when updating QuickBooks Desktop (QBDT).
Before anything else, we'll list the possible reason why you encountered error 15103 when attempting to update the program:
- The Shared Download drive wasn't mapped correctly
- A missing file or component for payroll updates
- Damaged windows files
- A firewall setting that may block payroll updates in QuickBooks Desktop
- QuickBooks File Copy Service (FCS) is disabled
- Unable to verify digital signatures
To get through this, you'll want to ensure to download the updates as an Administrator. Here's how:
- Close your company files and QuickBooks Desktop.
- Right-click on the QuickBooks Desktop icon, then select Run as Administrator.
- Select Yes on the message that says, "Do you want to allow this program to make changes to your computer?"
- Download the latest QuickBooks Desktop product updates or the latest payroll tax table update again.
If the issue persists, you can visit this page for other available troubleshooting methods: Fix error 15XXX when updating QuickBooks Desktop or QuickBooks Desktop Payroll.
Additionally, here's an article to help you secure a backup copy of your company file so you can use it in case you encounter any error when using the program: Back up your QuickBooks Desktop company file.
The Community Team is always ready to help you again if you need further assistance updating the program or have any additional QuickBooks-related queries. Please don't hesitate to visit us anytime. Keep safe.
