QuickBooks Error 1706 is a part of 1700 error code series in QuickBooks which is related to the update issues in QuickBooks.
We will follow these simple solutions to get past the error successfully on our Windows OS:
Solution 1: We will clean the Windows Temp folder:
Solution 2: We will try to fix the registry.
We will use Microsoft Fixit tool to troubleshoot the problem. Now we will try to install the product again.