Recently some users reported their foxflash software crashes during read or write ECU process. That’s because they did not enable the highest administrator privileges on the system.
How to Enable Highest Administrator Privileges (on Windows 10?)
Press win+R to run Command, input and open gpedit.msc
Go to Local Computer Policy->Windows settings->Security Settings->Local Policies
In the right pane you will see a setting User Account Control: Turn on Admin Approval Mode. Double-click on it and select Disabled.
Also disable User Account Control: Admin approval mode for built-in admin accounts. Double-click on it and select Disabled.
After enabling the highest administrator privileges, restart computer, then read and write ECU with foxflash again.