QuickBooks update error 15270 usually appears at the time of installation the software to your computer. If you get the issue, you should follow these steps to fix it:

You need to restart QuickBooks.
Now check for an update message.
If you find any update notification, then you have to install them.
Now click on help option and select to update QuickBooks.
Click on Update now option and then OK and proceed.
At last, you have to click on employee option and then payroll updates to install updates.

In this way, you can easily fix the issue, but if you are failed to do so, you should call at quickbooks customer service phone number for further support.

Read More: - quickbooks customer support phone number