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Please open CMD and type below command line to open the software:
runas /user:<domain or computer name>\<administrator_user_name> "<program location, such as C:\path\xxx.exe>"

Also, program re-move and re-installation is worthy to have a try.

If problem persists, as it is a 3rd party program relate problem, we are not familiar with its working principle, so, I would recommend you to contact the program’s developer/supporter and confirm with them about the details.

Acunetix Support:
https://www.acunetix.com/support/

Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.