I recognise the inconvenience you are experiencing with Norton Utilities Pro blocking the QuickBooks Online Desktop version as unsafe.
It's important to note that Norton Utilities Pro is third-party software, and we have no direct control over its settings or functionality. However, there are some things you can check to help you overcome this issue.
First, make sure you have the most recent version of Norton Utilities Pro installed on your computer. Installing the most recent version may resolve the issue. I also recommend contacting an IT professional to assist you in configuring specific settings or options for blocking applications or exceptions. Include QuickBooks Online Desktop app as an exception to the list of blocked applications. This should allow QuickBooks Online to function without interference from Norton Utilities Pro.