The QuickBooks Update Error 15106 happens when you try to update the QuickBooks desktop. It shows the updated software “cannot be opened or damaged “. It occurs when your antivirus software is restricting the update from taking place. Alternatively, you are not logged in as the administrator of the computer. Follow these to solve it:
As an administrator, sign in to your computer.
Rename directories and turn off your antivirus software.
Disable User Account Control (UAC)
In Selective Startup, perform a clean install.
